./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.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 5e8b15ed099b1f7cf4258894df881e9cd3bcfa356a0bdf33a8c3af6ce17b2dcd --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:08:53,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:08:53,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:08:53,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:08:53,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:08:53,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:08:53,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:08:53,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:08:53,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:08:53,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:08:53,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:08:53,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:08:53,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:08:53,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:08:53,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:08:53,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:08:53,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:08:53,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:08:53,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:08:53,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:08:53,803 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:08:53,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:08:53,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:08:53,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:08:53,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:08:53,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:08:53,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:08:53,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:08:53,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:08:53,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:08:53,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:08:53,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:08:53,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:08:53,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:08:53,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:08:53,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:08:53,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:08:53,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:08:53,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:08:53,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:08:53,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:08:53,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:08:53,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:08:53,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:08:53,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:08:53,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:08:53,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:08:53,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:08:53,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:08:53,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:08:53,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:08:53,856 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:08:53,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:08:53,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:08:53,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:08:53,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:08:53,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:08:53,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:08:53,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:08:53,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:08:53,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:08:53,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:08:53,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:08:53,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:08:53,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:08:53,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:08:53,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:08:53,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:08:53,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:08:53,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:08:53,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:08:53,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:08:53,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:08:53,866 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:08:53,866 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:08:53,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:08:53,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e8b15ed099b1f7cf4258894df881e9cd3bcfa356a0bdf33a8c3af6ce17b2dcd [2022-07-12 09:08:54,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:08:54,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:08:54,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:08:54,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:08:54,073 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:08:54,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c [2022-07-12 09:08:54,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0b3f3f2/d7236279be4d433d971a4d2ec48c32f2/FLAGf0156826c [2022-07-12 09:08:54,685 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:08:54,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c [2022-07-12 09:08:54,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0b3f3f2/d7236279be4d433d971a4d2ec48c32f2/FLAGf0156826c [2022-07-12 09:08:55,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0b3f3f2/d7236279be4d433d971a4d2ec48c32f2 [2022-07-12 09:08:55,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:08:55,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:08:55,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:08:55,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:08:55,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:08:55,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:08:55" (1/1) ... [2022-07-12 09:08:55,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16079397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:55, skipping insertion in model container [2022-07-12 09:08:55,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:08:55" (1/1) ... [2022-07-12 09:08:55,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:08:55,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:08:55,550 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.4.ufo.BOUNDED-8.pals+Problem12_label07.c[8616,8629] [2022-07-12 09:08:55,571 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.4.ufo.BOUNDED-8.pals+Problem12_label07.c[9458,9471] [2022-07-12 09:08:56,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:08:56,210 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:08:56,239 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.4.ufo.BOUNDED-8.pals+Problem12_label07.c[8616,8629] [2022-07-12 09:08:56,242 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.4.ufo.BOUNDED-8.pals+Problem12_label07.c[9458,9471] [2022-07-12 09:08:56,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:08:56,543 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:08:56,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56 WrapperNode [2022-07-12 09:08:56,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:08:56,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:08:56,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:08:56,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:08:56,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:56,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:56,849 INFO L137 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5031 [2022-07-12 09:08:56,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:08:56,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:08:56,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:08:56,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:08:56,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:56,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:56,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:56,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:57,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:57,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:57,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:57,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:08:57,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:08:57,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:08:57,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:08:57,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (1/1) ... [2022-07-12 09:08:57,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:08:57,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:08:57,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:08:57,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:08:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:08:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:08:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:08:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:08:57,437 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:08:57,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:09:00,081 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:09:00,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:09:00,096 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:09:00,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:09:00 BoogieIcfgContainer [2022-07-12 09:09:00,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:09:00,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:09:00,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:09:00,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:09:00,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:08:55" (1/3) ... [2022-07-12 09:09:00,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdc694c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:09:00, skipping insertion in model container [2022-07-12 09:09:00,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:08:56" (2/3) ... [2022-07-12 09:09:00,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdc694c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:09:00, skipping insertion in model container [2022-07-12 09:09:00,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:09:00" (3/3) ... [2022-07-12 09:09:00,106 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label07.c [2022-07-12 09:09:00,115 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:09:00,115 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:09:00,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:09:00,174 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@72566137, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@21a49807 [2022-07-12 09:09:00,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:09:00,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:09:00,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:00,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:09:00,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:00,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2128631676, now seen corresponding path program 1 times [2022-07-12 09:09:00,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:00,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3389481] [2022-07-12 09:09:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:00,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:00,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:00,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3389481] [2022-07-12 09:09:00,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3389481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:00,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:00,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:09:00,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685601351] [2022-07-12 09:09:00,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:00,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:09:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:00,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:09:00,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:00,369 INFO L87 Difference]: Start difference. First operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 0 states have call successors, (0), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:03,216 INFO L93 Difference]: Finished difference Result 2512 states and 4834 transitions. [2022-07-12 09:09:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:09:03,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-07-12 09:09:03,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:03,232 INFO L225 Difference]: With dead ends: 2512 [2022-07-12 09:09:03,232 INFO L226 Difference]: Without dead ends: 1578 [2022-07-12 09:09:03,237 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 [2022-07-12 09:09:03,239 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1015 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:03,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 282 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 09:09:03,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2022-07-12 09:09:03,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1578. [2022-07-12 09:09:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1576 states have (on average 1.8394670050761421) internal successors, (2899), 1577 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2899 transitions. [2022-07-12 09:09:03,301 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2899 transitions. Word has length 7 [2022-07-12 09:09:03,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:03,302 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2899 transitions. [2022-07-12 09:09:03,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2899 transitions. [2022-07-12 09:09:03,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 09:09:03,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:03,303 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] [2022-07-12 09:09:03,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:09:03,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1541863076, now seen corresponding path program 1 times [2022-07-12 09:09:03,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:03,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195446346] [2022-07-12 09:09:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:03,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:03,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:03,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195446346] [2022-07-12 09:09:03,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195446346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:03,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:03,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:09:03,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859500006] [2022-07-12 09:09:03,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:03,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:09:03,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:03,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:09:03,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:09:03,386 INFO L87 Difference]: Start difference. First operand 1578 states and 2899 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2022-07-12 09:09:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:03,440 INFO L93 Difference]: Finished difference Result 1670 states and 3041 transitions. [2022-07-12 09:09:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:03,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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 [2022-07-12 09:09:03,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:03,447 INFO L225 Difference]: With dead ends: 1670 [2022-07-12 09:09:03,447 INFO L226 Difference]: Without dead ends: 1622 [2022-07-12 09:09:03,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:09:03,450 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 71 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:03,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 6196 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:03,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-07-12 09:09:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1578. [2022-07-12 09:09:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1576 states have (on average 1.8248730964467006) internal successors, (2876), 1577 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2876 transitions. [2022-07-12 09:09:03,478 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2876 transitions. Word has length 30 [2022-07-12 09:09:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:03,479 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2876 transitions. [2022-07-12 09:09:03,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2022-07-12 09:09:03,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2876 transitions. [2022-07-12 09:09:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 09:09:03,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:03,484 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] [2022-07-12 09:09:03,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:09:03,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:03,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash 159296799, now seen corresponding path program 1 times [2022-07-12 09:09:03,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:03,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237008858] [2022-07-12 09:09:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:03,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:03,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237008858] [2022-07-12 09:09:03,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237008858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:03,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:03,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:09:03,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022267936] [2022-07-12 09:09:03,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:03,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:09:03,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:03,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:09:03,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:03,551 INFO L87 Difference]: Start difference. First operand 1578 states and 2876 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:03,575 INFO L93 Difference]: Finished difference Result 1660 states and 3004 transitions. [2022-07-12 09:09:03,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:09:03,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-12 09:09:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:03,580 INFO L225 Difference]: With dead ends: 1660 [2022-07-12 09:09:03,580 INFO L226 Difference]: Without dead ends: 1616 [2022-07-12 09:09:03,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:03,582 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 1498 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:03,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1659 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-07-12 09:09:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1614. [2022-07-12 09:09:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1612 states have (on average 1.8194789081885856) internal successors, (2933), 1613 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2933 transitions. [2022-07-12 09:09:03,655 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2933 transitions. Word has length 52 [2022-07-12 09:09:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:03,656 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2933 transitions. [2022-07-12 09:09:03,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2933 transitions. [2022-07-12 09:09:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 09:09:03,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:03,659 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] [2022-07-12 09:09:03,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:09:03,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:03,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1780734059, now seen corresponding path program 1 times [2022-07-12 09:09:03,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:03,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088659281] [2022-07-12 09:09:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:03,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:03,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:03,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088659281] [2022-07-12 09:09:03,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088659281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:03,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:03,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:09:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145364807] [2022-07-12 09:09:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:03,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:09:03,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:09:03,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:03,726 INFO L87 Difference]: Start difference. First operand 1614 states and 2933 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:03,751 INFO L93 Difference]: Finished difference Result 1762 states and 3165 transitions. [2022-07-12 09:09:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:09:03,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-12 09:09:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:03,757 INFO L225 Difference]: With dead ends: 1762 [2022-07-12 09:09:03,758 INFO L226 Difference]: Without dead ends: 1682 [2022-07-12 09:09:03,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:03,763 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:03,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1658 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-07-12 09:09:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1680. [2022-07-12 09:09:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1678 states have (on average 1.8092967818831942) internal successors, (3036), 1679 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 3036 transitions. [2022-07-12 09:09:03,791 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 3036 transitions. Word has length 52 [2022-07-12 09:09:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:03,791 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 3036 transitions. [2022-07-12 09:09:03,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 3036 transitions. [2022-07-12 09:09:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 09:09:03,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:03,793 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] [2022-07-12 09:09:03,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:09:03,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash 919948555, now seen corresponding path program 1 times [2022-07-12 09:09:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:03,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981048968] [2022-07-12 09:09:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:03,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:03,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:03,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981048968] [2022-07-12 09:09:03,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981048968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:03,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:03,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:09:03,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601309315] [2022-07-12 09:09:03,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:03,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:09:03,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:03,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:09:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:03,833 INFO L87 Difference]: Start difference. First operand 1680 states and 3036 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:03,860 INFO L93 Difference]: Finished difference Result 1948 states and 3454 transitions. [2022-07-12 09:09:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:09:03,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-12 09:09:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:03,866 INFO L225 Difference]: With dead ends: 1948 [2022-07-12 09:09:03,866 INFO L226 Difference]: Without dead ends: 1802 [2022-07-12 09:09:03,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:03,867 INFO L413 NwaCegarLoop]: 1582 mSDtfsCounter, 1490 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:03,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-07-12 09:09:03,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1800. [2022-07-12 09:09:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1798 states have (on average 1.7908787541713014) internal successors, (3220), 1799 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 3220 transitions. [2022-07-12 09:09:03,898 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 3220 transitions. Word has length 52 [2022-07-12 09:09:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:03,898 INFO L495 AbstractCegarLoop]: Abstraction has 1800 states and 3220 transitions. [2022-07-12 09:09:03,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 3220 transitions. [2022-07-12 09:09:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 09:09:03,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:03,899 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] [2022-07-12 09:09:03,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:09:03,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:03,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1515907135, now seen corresponding path program 1 times [2022-07-12 09:09:03,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:03,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962412859] [2022-07-12 09:09:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:03,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:03,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:03,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962412859] [2022-07-12 09:09:03,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962412859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:03,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:03,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:09:03,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367428957] [2022-07-12 09:09:03,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:03,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:09:03,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:03,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:09:03,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:03,952 INFO L87 Difference]: Start difference. First operand 1800 states and 3220 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:03,987 INFO L93 Difference]: Finished difference Result 2284 states and 3966 transitions. [2022-07-12 09:09:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:09:03,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-12 09:09:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:03,996 INFO L225 Difference]: With dead ends: 2284 [2022-07-12 09:09:03,996 INFO L226 Difference]: Without dead ends: 2018 [2022-07-12 09:09:03,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:04,000 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1486 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:04,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1656 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:04,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-07-12 09:09:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2016. [2022-07-12 09:09:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 2014 states have (on average 1.759682224428997) internal successors, (3544), 2015 states have internal predecessors, (3544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3544 transitions. [2022-07-12 09:09:04,050 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3544 transitions. Word has length 52 [2022-07-12 09:09:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:04,051 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 3544 transitions. [2022-07-12 09:09:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3544 transitions. [2022-07-12 09:09:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 09:09:04,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:04,053 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] [2022-07-12 09:09:04,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:09:04,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:04,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:04,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1924545907, now seen corresponding path program 1 times [2022-07-12 09:09:04,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:04,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905268155] [2022-07-12 09:09:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:04,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:04,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:04,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905268155] [2022-07-12 09:09:04,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905268155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:04,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:04,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:09:04,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581949657] [2022-07-12 09:09:04,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:04,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:09:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:09:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:09:04,137 INFO L87 Difference]: Start difference. First operand 2016 states and 3544 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:04,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:04,395 INFO L93 Difference]: Finished difference Result 5872 states and 9440 transitions. [2022-07-12 09:09:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:09:04,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-12 09:09:04,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:04,411 INFO L225 Difference]: With dead ends: 5872 [2022-07-12 09:09:04,412 INFO L226 Difference]: Without dead ends: 5390 [2022-07-12 09:09:04,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:09:04,415 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 6521 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6521 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:04,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6521 Valid, 2068 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2022-07-12 09:09:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 2496. [2022-07-12 09:09:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2494 states have (on average 1.7032878909382518) internal successors, (4248), 2495 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4248 transitions. [2022-07-12 09:09:04,509 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4248 transitions. Word has length 52 [2022-07-12 09:09:04,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:04,509 INFO L495 AbstractCegarLoop]: Abstraction has 2496 states and 4248 transitions. [2022-07-12 09:09:04,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4248 transitions. [2022-07-12 09:09:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 09:09:04,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:04,510 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] [2022-07-12 09:09:04,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:09:04,510 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1236981091, now seen corresponding path program 1 times [2022-07-12 09:09:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:04,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153606604] [2022-07-12 09:09:04,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:04,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:04,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:04,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153606604] [2022-07-12 09:09:04,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153606604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:04,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:04,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:09:04,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843565828] [2022-07-12 09:09:04,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:04,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:09:04,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:04,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:09:04,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:04,559 INFO L87 Difference]: Start difference. First operand 2496 states and 4248 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:04,633 INFO L93 Difference]: Finished difference Result 3902 states and 6348 transitions. [2022-07-12 09:09:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:09:04,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 09:09:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:04,644 INFO L225 Difference]: With dead ends: 3902 [2022-07-12 09:09:04,644 INFO L226 Difference]: Without dead ends: 2940 [2022-07-12 09:09:04,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:04,646 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1478 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:04,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1623 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2022-07-12 09:09:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2938. [2022-07-12 09:09:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.6628065395095368) internal successors, (4882), 2937 states have internal predecessors, (4882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4882 transitions. [2022-07-12 09:09:04,735 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4882 transitions. Word has length 54 [2022-07-12 09:09:04,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:04,736 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 4882 transitions. [2022-07-12 09:09:04,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:04,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4882 transitions. [2022-07-12 09:09:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 09:09:04,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:04,737 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] [2022-07-12 09:09:04,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:09:04,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1303474603, now seen corresponding path program 1 times [2022-07-12 09:09:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:04,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439064592] [2022-07-12 09:09:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:04,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439064592] [2022-07-12 09:09:04,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439064592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:04,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:04,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:09:04,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083327133] [2022-07-12 09:09:04,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:04,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:09:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:04,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:09:04,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:09:04,826 INFO L87 Difference]: Start difference. First operand 2938 states and 4882 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:05,009 INFO L93 Difference]: Finished difference Result 4342 states and 6956 transitions. [2022-07-12 09:09:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:05,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-12 09:09:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:05,019 INFO L225 Difference]: With dead ends: 4342 [2022-07-12 09:09:05,019 INFO L226 Difference]: Without dead ends: 2940 [2022-07-12 09:09:05,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:09:05,023 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 3072 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3072 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:05,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3072 Valid, 1726 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2022-07-12 09:09:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2938. [2022-07-12 09:09:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.654632152588556) internal successors, (4858), 2937 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4858 transitions. [2022-07-12 09:09:05,125 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4858 transitions. Word has length 54 [2022-07-12 09:09:05,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:05,125 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 4858 transitions. [2022-07-12 09:09:05,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:05,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4858 transitions. [2022-07-12 09:09:05,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 09:09:05,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:05,126 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] [2022-07-12 09:09:05,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:09:05,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:05,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1338283904, now seen corresponding path program 1 times [2022-07-12 09:09:05,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:05,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772302809] [2022-07-12 09:09:05,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:05,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:05,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:05,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772302809] [2022-07-12 09:09:05,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772302809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:05,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:05,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:09:05,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49201682] [2022-07-12 09:09:05,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:05,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:09:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:09:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:09:05,167 INFO L87 Difference]: Start difference. First operand 2938 states and 4858 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:05,323 INFO L93 Difference]: Finished difference Result 4340 states and 6907 transitions. [2022-07-12 09:09:05,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:05,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-12 09:09:05,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:05,332 INFO L225 Difference]: With dead ends: 4340 [2022-07-12 09:09:05,332 INFO L226 Difference]: Without dead ends: 2938 [2022-07-12 09:09:05,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:09:05,335 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 4543 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4543 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:05,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4543 Valid, 2992 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-07-12 09:09:05,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2938. [2022-07-12 09:09:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.646457765667575) internal successors, (4834), 2937 states have internal predecessors, (4834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4834 transitions. [2022-07-12 09:09:05,450 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4834 transitions. Word has length 55 [2022-07-12 09:09:05,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:05,450 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 4834 transitions. [2022-07-12 09:09:05,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4834 transitions. [2022-07-12 09:09:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 09:09:05,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:05,451 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] [2022-07-12 09:09:05,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:09:05,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 637219326, now seen corresponding path program 1 times [2022-07-12 09:09:05,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:05,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793381689] [2022-07-12 09:09:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:05,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:05,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793381689] [2022-07-12 09:09:05,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793381689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:05,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:05,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:09:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648456451] [2022-07-12 09:09:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:05,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:09:05,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:05,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:09:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:09:05,497 INFO L87 Difference]: Start difference. First operand 2938 states and 4834 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:05,669 INFO L93 Difference]: Finished difference Result 4340 states and 6859 transitions. [2022-07-12 09:09:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:05,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-12 09:09:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:05,676 INFO L225 Difference]: With dead ends: 4340 [2022-07-12 09:09:05,676 INFO L226 Difference]: Without dead ends: 2938 [2022-07-12 09:09:05,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:09:05,679 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 4576 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4576 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:05,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4576 Valid, 2993 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-07-12 09:09:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2938. [2022-07-12 09:09:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.638283378746594) internal successors, (4810), 2937 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4810 transitions. [2022-07-12 09:09:05,781 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4810 transitions. Word has length 55 [2022-07-12 09:09:05,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:05,781 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 4810 transitions. [2022-07-12 09:09:05,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:05,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4810 transitions. [2022-07-12 09:09:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 09:09:05,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:05,782 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] [2022-07-12 09:09:05,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:09:05,782 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:05,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:05,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1917083004, now seen corresponding path program 1 times [2022-07-12 09:09:05,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:05,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641968417] [2022-07-12 09:09:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:05,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:05,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641968417] [2022-07-12 09:09:05,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641968417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:05,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:05,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:09:05,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387053247] [2022-07-12 09:09:05,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:05,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:09:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:09:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:09:05,822 INFO L87 Difference]: Start difference. First operand 2938 states and 4810 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:06,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:06,031 INFO L93 Difference]: Finished difference Result 4169 states and 6508 transitions. [2022-07-12 09:09:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:09:06,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-12 09:09:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:06,040 INFO L225 Difference]: With dead ends: 4169 [2022-07-12 09:09:06,040 INFO L226 Difference]: Without dead ends: 4167 [2022-07-12 09:09:06,041 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 [2022-07-12 09:09:06,042 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 172 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 6153 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 [2022-07-12 09:09:06,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 6153 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:06,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-07-12 09:09:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3034. [2022-07-12 09:09:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3032 states have (on average 1.6154353562005277) internal successors, (4898), 3033 states have internal predecessors, (4898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4898 transitions. [2022-07-12 09:09:06,202 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4898 transitions. Word has length 55 [2022-07-12 09:09:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:06,203 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 4898 transitions. [2022-07-12 09:09:06,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:06,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4898 transitions. [2022-07-12 09:09:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 09:09:06,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:06,204 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:09:06,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:09:06,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:06,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1698168162, now seen corresponding path program 1 times [2022-07-12 09:09:06,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:06,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710124928] [2022-07-12 09:09:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:06,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:06,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:06,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710124928] [2022-07-12 09:09:06,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710124928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:06,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:06,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:09:06,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268994616] [2022-07-12 09:09:06,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:06,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:09:06,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:06,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:09:06,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:06,235 INFO L87 Difference]: Start difference. First operand 3034 states and 4898 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:08,525 INFO L93 Difference]: Finished difference Result 5289 states and 9013 transitions. [2022-07-12 09:09:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:09:08,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-07-12 09:09:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:08,531 INFO L225 Difference]: With dead ends: 5289 [2022-07-12 09:09:08,531 INFO L226 Difference]: Without dead ends: 3785 [2022-07-12 09:09:08,533 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 [2022-07-12 09:09:08,534 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 875 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:08,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 544 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:09:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2022-07-12 09:09:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3785. [2022-07-12 09:09:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 3783 states have (on average 1.4203013481363997) internal successors, (5373), 3784 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5373 transitions. [2022-07-12 09:09:08,678 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5373 transitions. Word has length 76 [2022-07-12 09:09:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:08,678 INFO L495 AbstractCegarLoop]: Abstraction has 3785 states and 5373 transitions. [2022-07-12 09:09:08,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:08,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5373 transitions. [2022-07-12 09:09:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-12 09:09:08,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:08,680 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:09:08,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:09:08,681 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:08,681 INFO L85 PathProgramCache]: Analyzing trace with hash -102888099, now seen corresponding path program 1 times [2022-07-12 09:09:08,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:08,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879569767] [2022-07-12 09:09:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:08,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 09:09:08,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:08,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879569767] [2022-07-12 09:09:08,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879569767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:08,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:08,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:09:08,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948007158] [2022-07-12 09:09:08,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:08,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:09:08,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:08,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:09:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:09:08,710 INFO L87 Difference]: Start difference. First operand 3785 states and 5373 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:11,297 INFO L93 Difference]: Finished difference Result 8293 states and 11874 transitions. [2022-07-12 09:09:11,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:09:11,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 78 [2022-07-12 09:09:11,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:11,311 INFO L225 Difference]: With dead ends: 8293 [2022-07-12 09:09:11,311 INFO L226 Difference]: Without dead ends: 6038 [2022-07-12 09:09:11,313 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 [2022-07-12 09:09:11,313 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 821 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:11,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 714 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:09:11,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2022-07-12 09:09:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 6038. [2022-07-12 09:09:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6038 states, 6036 states have (on average 1.3170974155069584) internal successors, (7950), 6037 states have internal predecessors, (7950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6038 states to 6038 states and 7950 transitions. [2022-07-12 09:09:11,484 INFO L78 Accepts]: Start accepts. Automaton has 6038 states and 7950 transitions. Word has length 78 [2022-07-12 09:09:11,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:11,484 INFO L495 AbstractCegarLoop]: Abstraction has 6038 states and 7950 transitions. [2022-07-12 09:09:11,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:11,484 INFO L276 IsEmpty]: Start isEmpty. Operand 6038 states and 7950 transitions. [2022-07-12 09:09:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:09:11,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:11,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:09:11,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:09:11,486 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:11,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash -484645446, now seen corresponding path program 1 times [2022-07-12 09:09:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:11,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325837307] [2022-07-12 09:09:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:11,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 09:09:11,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:11,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325837307] [2022-07-12 09:09:11,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325837307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:11,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:11,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:09:11,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100162521] [2022-07-12 09:09:11,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:11,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:09:11,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:09:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:09:11,543 INFO L87 Difference]: Start difference. First operand 6038 states and 7950 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:11,982 INFO L93 Difference]: Finished difference Result 12344 states and 16719 transitions. [2022-07-12 09:09:11,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:11,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 79 [2022-07-12 09:09:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:11,996 INFO L225 Difference]: With dead ends: 12344 [2022-07-12 09:09:11,996 INFO L226 Difference]: Without dead ends: 10846 [2022-07-12 09:09:11,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:09:12,000 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 4751 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4751 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:12,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4751 Valid, 3330 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10846 states. [2022-07-12 09:09:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10846 to 7534. [2022-07-12 09:09:12,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7534 states, 7532 states have (on average 1.3295273499734466) internal successors, (10014), 7533 states have internal predecessors, (10014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7534 states to 7534 states and 10014 transitions. [2022-07-12 09:09:12,243 INFO L78 Accepts]: Start accepts. Automaton has 7534 states and 10014 transitions. Word has length 79 [2022-07-12 09:09:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:12,243 INFO L495 AbstractCegarLoop]: Abstraction has 7534 states and 10014 transitions. [2022-07-12 09:09:12,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:12,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7534 states and 10014 transitions. [2022-07-12 09:09:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:09:12,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:12,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:09:12,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:09:12,245 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2041539034, now seen corresponding path program 1 times [2022-07-12 09:09:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:12,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750225921] [2022-07-12 09:09:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:12,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 09:09:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:12,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750225921] [2022-07-12 09:09:12,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750225921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:12,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:12,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:09:12,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12372545] [2022-07-12 09:09:12,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:12,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:09:12,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:12,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:09:12,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:09:12,289 INFO L87 Difference]: Start difference. First operand 7534 states and 10014 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:12,815 INFO L93 Difference]: Finished difference Result 13840 states and 18783 transitions. [2022-07-12 09:09:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:12,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 79 [2022-07-12 09:09:12,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:12,834 INFO L225 Difference]: With dead ends: 13840 [2022-07-12 09:09:12,834 INFO L226 Difference]: Without dead ends: 12342 [2022-07-12 09:09:12,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:09:12,839 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 4706 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4706 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:12,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4706 Valid, 3379 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12342 states. [2022-07-12 09:09:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12342 to 9782. [2022-07-12 09:09:13,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9782 states, 9780 states have (on average 1.3384458077709611) internal successors, (13090), 9781 states have internal predecessors, (13090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9782 states to 9782 states and 13090 transitions. [2022-07-12 09:09:13,265 INFO L78 Accepts]: Start accepts. Automaton has 9782 states and 13090 transitions. Word has length 79 [2022-07-12 09:09:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:13,265 INFO L495 AbstractCegarLoop]: Abstraction has 9782 states and 13090 transitions. [2022-07-12 09:09:13,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 9782 states and 13090 transitions. [2022-07-12 09:09:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:09:13,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:13,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:09:13,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:09:13,268 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1121788422, now seen corresponding path program 1 times [2022-07-12 09:09:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:13,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772820200] [2022-07-12 09:09:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:13,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:09:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:13,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772820200] [2022-07-12 09:09:13,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772820200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:13,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:13,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:09:13,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800013055] [2022-07-12 09:09:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:13,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:09:13,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:13,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:09:13,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:09:13,315 INFO L87 Difference]: Start difference. First operand 9782 states and 13090 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:14,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:14,008 INFO L93 Difference]: Finished difference Result 15336 states and 20847 transitions. [2022-07-12 09:09:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:14,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 79 [2022-07-12 09:09:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:14,029 INFO L225 Difference]: With dead ends: 15336 [2022-07-12 09:09:14,029 INFO L226 Difference]: Without dead ends: 13838 [2022-07-12 09:09:14,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:09:14,036 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 4738 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4738 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:14,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4738 Valid, 3395 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:14,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13838 states. [2022-07-12 09:09:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13838 to 11278. [2022-07-12 09:09:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11278 states, 11276 states have (on average 1.3439162823696347) internal successors, (15154), 11277 states have internal predecessors, (15154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11278 states to 11278 states and 15154 transitions. [2022-07-12 09:09:14,585 INFO L78 Accepts]: Start accepts. Automaton has 11278 states and 15154 transitions. Word has length 79 [2022-07-12 09:09:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:14,586 INFO L495 AbstractCegarLoop]: Abstraction has 11278 states and 15154 transitions. [2022-07-12 09:09:14,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 11278 states and 15154 transitions. [2022-07-12 09:09:14,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 09:09:14,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:14,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:09:14,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:09:14,589 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:14,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:14,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1937719834, now seen corresponding path program 1 times [2022-07-12 09:09:14,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:14,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448060748] [2022-07-12 09:09:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:14,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:14,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:09:14,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:14,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448060748] [2022-07-12 09:09:14,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448060748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:09:14,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:09:14,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:09:14,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600357528] [2022-07-12 09:09:14,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:09:14,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:09:14,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:14,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:09:14,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:09:14,626 INFO L87 Difference]: Start difference. First operand 11278 states and 15154 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:15,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:15,419 INFO L93 Difference]: Finished difference Result 15952 states and 21711 transitions. [2022-07-12 09:09:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:09:15,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 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 79 [2022-07-12 09:09:15,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:15,433 INFO L225 Difference]: With dead ends: 15952 [2022-07-12 09:09:15,433 INFO L226 Difference]: Without dead ends: 14894 [2022-07-12 09:09:15,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:09:15,437 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 4739 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:15,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4739 Valid, 3335 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14894 states. [2022-07-12 09:09:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14894 to 12334. [2022-07-12 09:09:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12334 states, 12332 states have (on average 1.3481998053843658) internal successors, (16626), 12333 states have internal predecessors, (16626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:16,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12334 states to 12334 states and 16626 transitions. [2022-07-12 09:09:16,125 INFO L78 Accepts]: Start accepts. Automaton has 12334 states and 16626 transitions. Word has length 79 [2022-07-12 09:09:16,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:16,126 INFO L495 AbstractCegarLoop]: Abstraction has 12334 states and 16626 transitions. [2022-07-12 09:09:16,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:16,126 INFO L276 IsEmpty]: Start isEmpty. Operand 12334 states and 16626 transitions. [2022-07-12 09:09:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 09:09:16,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:16,128 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] [2022-07-12 09:09:16,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:09:16,129 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash -596667294, now seen corresponding path program 1 times [2022-07-12 09:09:16,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:16,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761559600] [2022-07-12 09:09:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:16,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:09:16,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761559600] [2022-07-12 09:09:16,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761559600] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:09:16,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304961713] [2022-07-12 09:09:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:16,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:09:16,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:09:16,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:09:16,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:09:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:16,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 09:09:16,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:09:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:09:16,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:09:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:09:16,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304961713] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:09:16,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:09:16,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2022-07-12 09:09:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882942887] [2022-07-12 09:09:16,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:09:16,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:09:16,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:09:16,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:09:16,632 INFO L87 Difference]: Start difference. First operand 12334 states and 16626 transitions. Second operand has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:09:18,494 INFO L93 Difference]: Finished difference Result 32955 states and 45484 transitions. [2022-07-12 09:09:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:09:18,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 0 states have call successors, (0), 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 80 [2022-07-12 09:09:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:09:18,529 INFO L225 Difference]: With dead ends: 32955 [2022-07-12 09:09:18,529 INFO L226 Difference]: Without dead ends: 27145 [2022-07-12 09:09:18,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:09:18,539 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 3311 mSDsluCounter, 4869 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3311 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:09:18,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3311 Valid, 6471 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:09:18,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27145 states. [2022-07-12 09:09:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27145 to 26974. [2022-07-12 09:09:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26974 states, 26972 states have (on average 1.3482871125611746) internal successors, (36366), 26973 states have internal predecessors, (36366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26974 states to 26974 states and 36366 transitions. [2022-07-12 09:09:20,716 INFO L78 Accepts]: Start accepts. Automaton has 26974 states and 36366 transitions. Word has length 80 [2022-07-12 09:09:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:09:20,716 INFO L495 AbstractCegarLoop]: Abstraction has 26974 states and 36366 transitions. [2022-07-12 09:09:20,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:09:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 26974 states and 36366 transitions. [2022-07-12 09:09:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-12 09:09:20,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:09:20,718 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] [2022-07-12 09:09:20,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:09:20,935 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 [2022-07-12 09:09:20,935 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:09:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:09:20,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1057956914, now seen corresponding path program 1 times [2022-07-12 09:09:20,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:09:20,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594196267] [2022-07-12 09:09:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:20,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:09:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:21,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:09:21,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594196267] [2022-07-12 09:09:21,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594196267] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:09:21,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732591760] [2022-07-12 09:09:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:09:21,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:09:21,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:09:21,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:09:21,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:09:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:09:21,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 09:09:21,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:09:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:21,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:09:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:09:22,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732591760] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:09:22,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:09:22,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2022-07-12 09:09:22,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589650548] [2022-07-12 09:09:22,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:09:22,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 09:09:22,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:09:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 09:09:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-07-12 09:09:22,149 INFO L87 Difference]: Start difference. First operand 26974 states and 36366 transitions. Second operand has 30 states, 30 states have (on average 6.966666666666667) internal successors, (209), 29 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:10:31,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:10:31,934 INFO L93 Difference]: Finished difference Result 541680 states and 719734 transitions. [2022-07-12 09:10:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2022-07-12 09:10:31,934 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.966666666666667) internal successors, (209), 29 states have internal predecessors, (209), 0 states have call successors, (0), 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 81 [2022-07-12 09:10:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:10:33,135 INFO L225 Difference]: With dead ends: 541680 [2022-07-12 09:10:33,136 INFO L226 Difference]: Without dead ends: 519246 [2022-07-12 09:10:33,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43738 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=11400, Invalid=93252, Unknown=0, NotChecked=0, Total=104652 [2022-07-12 09:10:33,316 INFO L413 NwaCegarLoop]: 1706 mSDtfsCounter, 28133 mSDsluCounter, 10608 mSDsCounter, 0 mSdLazyCounter, 3652 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28133 SdHoareTripleChecker+Valid, 12314 SdHoareTripleChecker+Invalid, 4252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 3652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:10:33,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28133 Valid, 12314 Invalid, 4252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 3652 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:10:33,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519246 states.