./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.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 9d4ab7b0bf7f76413047af223f6c467063540165a0afee8e7614d892acad57a3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:27:53,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:27:53,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:27:53,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:27:53,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:27:53,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:27:53,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:27:53,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:27:53,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:27:53,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:27:53,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:27:53,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:27:53,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:27:53,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:27:53,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:27:53,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:27:53,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:27:53,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:27:53,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:27:53,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:27:53,083 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:27:53,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:27:53,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:27:53,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:27:53,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:27:53,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:27:53,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:27:53,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:27:53,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:27:53,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:27:53,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:27:53,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:27:53,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:27:53,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:27:53,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:27:53,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:27:53,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:27:53,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:27:53,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:27:53,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:27:53,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:27:53,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:27:53,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:27:53,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:27:53,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:27:53,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:27:53,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:27:53,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:27:53,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:27:53,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:27:53,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:27:53,142 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:27:53,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:27:53,144 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:27:53,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:27:53,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:27:53,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:27:53,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:27:53,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:27:53,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:27:53,145 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:27:53,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:27:53,145 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:27:53,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:27:53,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:27:53,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:27:53,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:27:53,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:27:53,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:27:53,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:27:53,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:27:53,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:27:53,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:27:53,148 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:27:53,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:27:53,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:27:53,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d4ab7b0bf7f76413047af223f6c467063540165a0afee8e7614d892acad57a3 [2022-07-19 20:27:53,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:27:53,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:27:53,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:27:53,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:27:53,447 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:27:53,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-07-19 20:27:53,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2596878ba/d0c131a52d9549eea4b67adcdc047193/FLAGd4c5da542 [2022-07-19 20:27:54,267 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:27:54,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-07-19 20:27:54,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2596878ba/d0c131a52d9549eea4b67adcdc047193/FLAGd4c5da542 [2022-07-19 20:27:54,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2596878ba/d0c131a52d9549eea4b67adcdc047193 [2022-07-19 20:27:54,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:27:54,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:27:54,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:27:54,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:27:54,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:27:54,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:27:54" (1/1) ... [2022-07-19 20:27:54,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29617378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:54, skipping insertion in model container [2022-07-19 20:27:54,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:27:54" (1/1) ... [2022-07-19 20:27:54,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:27:54,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:27:54,854 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.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[26962,26975] [2022-07-19 20:27:54,898 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.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[34023,34036] [2022-07-19 20:27:55,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:27:55,549 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:27:55,601 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.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[26962,26975] [2022-07-19 20:27:55,616 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.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[34023,34036] [2022-07-19 20:27:55,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:27:56,006 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:27:56,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56 WrapperNode [2022-07-19 20:27:56,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:27:56,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:27:56,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:27:56,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:27:56,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,419 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5277 [2022-07-19 20:27:56,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:27:56,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:27:56,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:27:56,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:27:56,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:27:56,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:27:56,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:27:56,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:27:56,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (1/1) ... [2022-07-19 20:27:56,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:27:56,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:27:56,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:27:57,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:27:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:27:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:27:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:27:57,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:27:57,179 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:27:57,180 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:28:00,840 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:28:00,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:28:00,865 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:28:00,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:28:00 BoogieIcfgContainer [2022-07-19 20:28:00,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:28:00,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:28:00,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:28:00,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:28:00,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:27:54" (1/3) ... [2022-07-19 20:28:00,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd2da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:28:00, skipping insertion in model container [2022-07-19 20:28:00,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:27:56" (2/3) ... [2022-07-19 20:28:00,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd2da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:28:00, skipping insertion in model container [2022-07-19 20:28:00,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:28:00" (3/3) ... [2022-07-19 20:28:00,878 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-07-19 20:28:00,892 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:28:00,892 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:28:00,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:28:00,984 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@796ef2fc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@726b3d68 [2022-07-19 20:28:00,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:28:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-19 20:28:01,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:01,018 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] [2022-07-19 20:28:01,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:01,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:01,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2107180874, now seen corresponding path program 1 times [2022-07-19 20:28:01,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:01,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860919219] [2022-07-19 20:28:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:01,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:01,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:01,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860919219] [2022-07-19 20:28:01,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860919219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:01,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:01,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:28:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965974612] [2022-07-19 20:28:01,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:01,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 20:28:01,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:01,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 20:28:01,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:28:01,373 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:01,462 INFO L93 Difference]: Finished difference Result 1857 states and 3510 transitions. [2022-07-19 20:28:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 20:28:01,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-07-19 20:28:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:01,479 INFO L225 Difference]: With dead ends: 1857 [2022-07-19 20:28:01,480 INFO L226 Difference]: Without dead ends: 897 [2022-07-19 20:28:01,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 20:28:01,489 INFO L413 NwaCegarLoop]: 1752 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:01,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-07-19 20:28:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2022-07-19 20:28:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.8860335195530726) internal successors, (1688), 896 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1688 transitions. [2022-07-19 20:28:01,563 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1688 transitions. Word has length 46 [2022-07-19 20:28:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:01,564 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1688 transitions. [2022-07-19 20:28:01,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1688 transitions. [2022-07-19 20:28:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-19 20:28:01,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:01,566 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] [2022-07-19 20:28:01,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:28:01,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2022-07-19 20:28:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:01,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89143068] [2022-07-19 20:28:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:01,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89143068] [2022-07-19 20:28:01,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89143068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:01,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:01,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:28:01,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422507429] [2022-07-19 20:28:01,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:01,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:28:01,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:28:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:28:01,726 INFO L87 Difference]: Start difference. First operand 897 states and 1688 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:01,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:01,874 INFO L93 Difference]: Finished difference Result 977 states and 1813 transitions. [2022-07-19 20:28:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:28:01,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-07-19 20:28:01,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:01,879 INFO L225 Difference]: With dead ends: 977 [2022-07-19 20:28:01,879 INFO L226 Difference]: Without dead ends: 897 [2022-07-19 20:28:01,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:28:01,882 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:01,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:28:01,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-07-19 20:28:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2022-07-19 20:28:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 895 states have (on average 1.817877094972067) internal successors, (1627), 896 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:01,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1627 transitions. [2022-07-19 20:28:01,909 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1627 transitions. Word has length 46 [2022-07-19 20:28:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:01,909 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1627 transitions. [2022-07-19 20:28:01,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1627 transitions. [2022-07-19 20:28:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 20:28:01,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:01,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:01,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:28:01,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:01,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash -430057188, now seen corresponding path program 1 times [2022-07-19 20:28:01,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:01,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392963064] [2022-07-19 20:28:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:01,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:02,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:02,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392963064] [2022-07-19 20:28:02,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392963064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:02,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:02,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:28:02,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890831256] [2022-07-19 20:28:02,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:02,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:02,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:02,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:02,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:02,062 INFO L87 Difference]: Start difference. First operand 897 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:05,218 INFO L93 Difference]: Finished difference Result 2401 states and 4500 transitions. [2022-07-19 20:28:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:05,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-19 20:28:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:05,227 INFO L225 Difference]: With dead ends: 2401 [2022-07-19 20:28:05,228 INFO L226 Difference]: Without dead ends: 1648 [2022-07-19 20:28:05,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:05,230 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 928 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:05,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 663 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 20:28:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-19 20:28:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-07-19 20:28:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.583232077764277) internal successors, (2606), 1647 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2606 transitions. [2022-07-19 20:28:05,276 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2606 transitions. Word has length 61 [2022-07-19 20:28:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:05,277 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2606 transitions. [2022-07-19 20:28:05,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2606 transitions. [2022-07-19 20:28:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:28:05,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:05,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:05,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:28:05,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2022-07-19 20:28:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:05,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961704072] [2022-07-19 20:28:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:05,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:05,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:05,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961704072] [2022-07-19 20:28:05,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961704072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:05,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:05,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:28:05,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462672426] [2022-07-19 20:28:05,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:05,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:05,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:05,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:05,392 INFO L87 Difference]: Start difference. First operand 1648 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:05,425 INFO L93 Difference]: Finished difference Result 1794 states and 2838 transitions. [2022-07-19 20:28:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:05,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:28:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:05,433 INFO L225 Difference]: With dead ends: 1794 [2022-07-19 20:28:05,433 INFO L226 Difference]: Without dead ends: 1718 [2022-07-19 20:28:05,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:05,435 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:05,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:05,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2022-07-19 20:28:05,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1716. [2022-07-19 20:28:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1714 states have (on average 1.5840140023337224) internal successors, (2715), 1715 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2715 transitions. [2022-07-19 20:28:05,479 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2715 transitions. Word has length 106 [2022-07-19 20:28:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:05,480 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2715 transitions. [2022-07-19 20:28:05,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2715 transitions. [2022-07-19 20:28:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:28:05,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:05,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:05,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:28:05,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2022-07-19 20:28:05,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997684763] [2022-07-19 20:28:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:05,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:05,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:05,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997684763] [2022-07-19 20:28:05,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997684763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:05,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:05,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:28:05,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448590381] [2022-07-19 20:28:05,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:05,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:05,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:05,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:05,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:05,593 INFO L87 Difference]: Start difference. First operand 1716 states and 2715 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:05,630 INFO L93 Difference]: Finished difference Result 1992 states and 3155 transitions. [2022-07-19 20:28:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:05,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:28:05,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:05,639 INFO L225 Difference]: With dead ends: 1992 [2022-07-19 20:28:05,640 INFO L226 Difference]: Without dead ends: 1848 [2022-07-19 20:28:05,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:05,642 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:05,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2022-07-19 20:28:05,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1846. [2022-07-19 20:28:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1844 states have (on average 1.5845986984815619) internal successors, (2922), 1845 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2922 transitions. [2022-07-19 20:28:05,685 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2922 transitions. Word has length 106 [2022-07-19 20:28:05,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:05,686 INFO L495 AbstractCegarLoop]: Abstraction has 1846 states and 2922 transitions. [2022-07-19 20:28:05,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2922 transitions. [2022-07-19 20:28:05,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:28:05,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:05,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:05,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:28:05,689 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:05,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2022-07-19 20:28:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:05,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860661420] [2022-07-19 20:28:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:05,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:05,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860661420] [2022-07-19 20:28:05,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860661420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:05,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:05,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:28:05,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497798941] [2022-07-19 20:28:05,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:05,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:05,756 INFO L87 Difference]: Start difference. First operand 1846 states and 2922 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:05,797 INFO L93 Difference]: Finished difference Result 2370 states and 3756 transitions. [2022-07-19 20:28:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:05,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:28:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:05,808 INFO L225 Difference]: With dead ends: 2370 [2022-07-19 20:28:05,808 INFO L226 Difference]: Without dead ends: 2096 [2022-07-19 20:28:05,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:05,810 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:05,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:05,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2022-07-19 20:28:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2094. [2022-07-19 20:28:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2092 states have (on average 1.5841300191204588) internal successors, (3314), 2093 states have internal predecessors, (3314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 3314 transitions. [2022-07-19 20:28:05,862 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 3314 transitions. Word has length 106 [2022-07-19 20:28:05,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:05,862 INFO L495 AbstractCegarLoop]: Abstraction has 2094 states and 3314 transitions. [2022-07-19 20:28:05,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 3314 transitions. [2022-07-19 20:28:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:28:05,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:05,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:05,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:28:05,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:05,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2022-07-19 20:28:05,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:05,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227136386] [2022-07-19 20:28:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:05,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:06,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227136386] [2022-07-19 20:28:06,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227136386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:06,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:06,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:28:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769367204] [2022-07-19 20:28:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:06,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:06,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:06,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:06,009 INFO L87 Difference]: Start difference. First operand 2094 states and 3314 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:06,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:06,063 INFO L93 Difference]: Finished difference Result 3090 states and 4892 transitions. [2022-07-19 20:28:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:06,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:28:06,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:06,073 INFO L225 Difference]: With dead ends: 3090 [2022-07-19 20:28:06,074 INFO L226 Difference]: Without dead ends: 2568 [2022-07-19 20:28:06,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:06,079 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:06,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-07-19 20:28:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2566. [2022-07-19 20:28:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2564 states have (on average 1.5811232449297972) internal successors, (4054), 2565 states have internal predecessors, (4054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 4054 transitions. [2022-07-19 20:28:06,155 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 4054 transitions. Word has length 106 [2022-07-19 20:28:06,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:06,156 INFO L495 AbstractCegarLoop]: Abstraction has 2566 states and 4054 transitions. [2022-07-19 20:28:06,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:06,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 4054 transitions. [2022-07-19 20:28:06,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 20:28:06,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:06,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:06,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:28:06,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:06,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2022-07-19 20:28:06,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:06,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987571238] [2022-07-19 20:28:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:06,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:06,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:06,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987571238] [2022-07-19 20:28:06,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987571238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:06,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:06,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:28:06,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181703163] [2022-07-19 20:28:06,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:06,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:28:06,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:06,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:28:06,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:28:06,293 INFO L87 Difference]: Start difference. First operand 2566 states and 4054 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:07,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:07,360 INFO L93 Difference]: Finished difference Result 18470 states and 29158 transitions. [2022-07-19 20:28:07,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 20:28:07,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-19 20:28:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:07,446 INFO L225 Difference]: With dead ends: 18470 [2022-07-19 20:28:07,446 INFO L226 Difference]: Without dead ends: 17476 [2022-07-19 20:28:07,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-19 20:28:07,458 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:07,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:28:07,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17476 states. [2022-07-19 20:28:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17476 to 3558. [2022-07-19 20:28:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3556 states have (on average 1.5719910011248595) internal successors, (5590), 3557 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5590 transitions. [2022-07-19 20:28:07,802 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5590 transitions. Word has length 106 [2022-07-19 20:28:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:07,803 INFO L495 AbstractCegarLoop]: Abstraction has 3558 states and 5590 transitions. [2022-07-19 20:28:07,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:07,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5590 transitions. [2022-07-19 20:28:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:28:07,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:07,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:07,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:28:07,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2022-07-19 20:28:07,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:07,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053867597] [2022-07-19 20:28:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:07,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:07,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:07,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053867597] [2022-07-19 20:28:07,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053867597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:07,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:07,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:28:07,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582483738] [2022-07-19 20:28:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:07,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:07,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:07,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:07,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:07,869 INFO L87 Difference]: Start difference. First operand 3558 states and 5590 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:08,127 INFO L93 Difference]: Finished difference Result 6500 states and 10186 transitions. [2022-07-19 20:28:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:28:08,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:08,139 INFO L225 Difference]: With dead ends: 6500 [2022-07-19 20:28:08,139 INFO L226 Difference]: Without dead ends: 4514 [2022-07-19 20:28:08,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:08,145 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:08,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:08,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2022-07-19 20:28:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 4512. [2022-07-19 20:28:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4510 states have (on average 1.5645232815964523) internal successors, (7056), 4511 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 7056 transitions. [2022-07-19 20:28:08,397 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 7056 transitions. Word has length 108 [2022-07-19 20:28:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:08,398 INFO L495 AbstractCegarLoop]: Abstraction has 4512 states and 7056 transitions. [2022-07-19 20:28:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 7056 transitions. [2022-07-19 20:28:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:28:08,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:08,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:08,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:28:08,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2022-07-19 20:28:08,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:08,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845866573] [2022-07-19 20:28:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:08,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:08,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:08,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845866573] [2022-07-19 20:28:08,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845866573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:08,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:08,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:28:08,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075111374] [2022-07-19 20:28:08,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:08,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:28:08,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:08,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:28:08,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:28:08,677 INFO L87 Difference]: Start difference. First operand 4512 states and 7056 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:09,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:09,270 INFO L93 Difference]: Finished difference Result 7452 states and 11626 transitions. [2022-07-19 20:28:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:28:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:28:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:09,280 INFO L225 Difference]: With dead ends: 7452 [2022-07-19 20:28:09,281 INFO L226 Difference]: Without dead ends: 4514 [2022-07-19 20:28:09,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:28:09,286 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 2088 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:09,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 2614 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:28:09,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2022-07-19 20:28:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 4512. [2022-07-19 20:28:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4510 states have (on average 1.55920177383592) internal successors, (7032), 4511 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 7032 transitions. [2022-07-19 20:28:09,602 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 7032 transitions. Word has length 108 [2022-07-19 20:28:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:09,602 INFO L495 AbstractCegarLoop]: Abstraction has 4512 states and 7032 transitions. [2022-07-19 20:28:09,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 7032 transitions. [2022-07-19 20:28:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:28:09,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:09,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:09,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:28:09,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:09,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2022-07-19 20:28:09,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:09,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849740964] [2022-07-19 20:28:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:09,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:09,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:09,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849740964] [2022-07-19 20:28:09,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849740964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:09,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:09,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:28:09,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259659383] [2022-07-19 20:28:09,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:09,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:09,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:09,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:09,659 INFO L87 Difference]: Start difference. First operand 4512 states and 7032 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:10,042 INFO L93 Difference]: Finished difference Result 10100 states and 15642 transitions. [2022-07-19 20:28:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:10,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:28:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:10,058 INFO L225 Difference]: With dead ends: 10100 [2022-07-19 20:28:10,059 INFO L226 Difference]: Without dead ends: 7162 [2022-07-19 20:28:10,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:10,066 INFO L413 NwaCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:10,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:10,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7162 states. [2022-07-19 20:28:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7162 to 7160. [2022-07-19 20:28:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7160 states, 7158 states have (on average 1.5434478904721989) internal successors, (11048), 7159 states have internal predecessors, (11048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7160 states to 7160 states and 11048 transitions. [2022-07-19 20:28:10,587 INFO L78 Accepts]: Start accepts. Automaton has 7160 states and 11048 transitions. Word has length 108 [2022-07-19 20:28:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:10,588 INFO L495 AbstractCegarLoop]: Abstraction has 7160 states and 11048 transitions. [2022-07-19 20:28:10,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:10,589 INFO L276 IsEmpty]: Start isEmpty. Operand 7160 states and 11048 transitions. [2022-07-19 20:28:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:28:10,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:10,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:10,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:28:10,590 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:10,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:10,591 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2022-07-19 20:28:10,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:10,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160489964] [2022-07-19 20:28:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:10,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:10,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:10,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160489964] [2022-07-19 20:28:10,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160489964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:10,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:10,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:28:10,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821110902] [2022-07-19 20:28:10,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:10,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:10,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:10,644 INFO L87 Difference]: Start difference. First operand 7160 states and 11048 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:11,562 INFO L93 Difference]: Finished difference Result 17756 states and 27210 transitions. [2022-07-19 20:28:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:11,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:28:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:11,588 INFO L225 Difference]: With dead ends: 17756 [2022-07-19 20:28:11,589 INFO L226 Difference]: Without dead ends: 12170 [2022-07-19 20:28:11,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:11,601 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:11,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2022-07-19 20:28:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 12168. [2022-07-19 20:28:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12168 states, 12166 states have (on average 1.524905474272563) internal successors, (18552), 12167 states have internal predecessors, (18552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 18552 transitions. [2022-07-19 20:28:12,468 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 18552 transitions. Word has length 108 [2022-07-19 20:28:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:12,469 INFO L495 AbstractCegarLoop]: Abstraction has 12168 states and 18552 transitions. [2022-07-19 20:28:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 18552 transitions. [2022-07-19 20:28:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:28:12,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:12,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:12,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:28:12,471 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:12,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2022-07-19 20:28:12,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:12,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140358363] [2022-07-19 20:28:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:12,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:12,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:12,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140358363] [2022-07-19 20:28:12,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140358363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:12,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:12,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:28:12,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183485743] [2022-07-19 20:28:12,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:12,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:12,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:12,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:12,529 INFO L87 Difference]: Start difference. First operand 12168 states and 18552 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:13,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:13,897 INFO L93 Difference]: Finished difference Result 32204 states and 48762 transitions. [2022-07-19 20:28:13,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:13,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:28:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:13,946 INFO L225 Difference]: With dead ends: 32204 [2022-07-19 20:28:13,946 INFO L226 Difference]: Without dead ends: 21610 [2022-07-19 20:28:13,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:13,963 INFO L413 NwaCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:13,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21610 states. [2022-07-19 20:28:15,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21610 to 21608. [2022-07-19 20:28:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21608 states, 21606 states have (on average 1.5043969267795982) internal successors, (32504), 21607 states have internal predecessors, (32504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:15,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21608 states to 21608 states and 32504 transitions. [2022-07-19 20:28:15,488 INFO L78 Accepts]: Start accepts. Automaton has 21608 states and 32504 transitions. Word has length 108 [2022-07-19 20:28:15,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:15,489 INFO L495 AbstractCegarLoop]: Abstraction has 21608 states and 32504 transitions. [2022-07-19 20:28:15,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:15,489 INFO L276 IsEmpty]: Start isEmpty. Operand 21608 states and 32504 transitions. [2022-07-19 20:28:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 20:28:15,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:15,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:15,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:28:15,491 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:15,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:15,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2022-07-19 20:28:15,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:15,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165542388] [2022-07-19 20:28:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:15,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:15,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:15,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165542388] [2022-07-19 20:28:15,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165542388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:15,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:15,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:28:15,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942138801] [2022-07-19 20:28:15,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:15,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:15,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:15,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:15,568 INFO L87 Difference]: Start difference. First operand 21608 states and 32504 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:17,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:17,885 INFO L93 Difference]: Finished difference Result 59372 states and 88698 transitions. [2022-07-19 20:28:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:17,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-19 20:28:17,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:17,945 INFO L225 Difference]: With dead ends: 59372 [2022-07-19 20:28:17,945 INFO L226 Difference]: Without dead ends: 39338 [2022-07-19 20:28:17,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:17,970 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:17,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39338 states. [2022-07-19 20:28:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39338 to 39336. [2022-07-19 20:28:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39336 states, 39334 states have (on average 1.4820765749733056) internal successors, (58296), 39335 states have internal predecessors, (58296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39336 states to 39336 states and 58296 transitions. [2022-07-19 20:28:20,863 INFO L78 Accepts]: Start accepts. Automaton has 39336 states and 58296 transitions. Word has length 108 [2022-07-19 20:28:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:20,863 INFO L495 AbstractCegarLoop]: Abstraction has 39336 states and 58296 transitions. [2022-07-19 20:28:20,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:20,864 INFO L276 IsEmpty]: Start isEmpty. Operand 39336 states and 58296 transitions. [2022-07-19 20:28:20,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 20:28:20,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:20,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:20,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:28:20,866 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:20,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:20,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2022-07-19 20:28:20,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:20,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648855131] [2022-07-19 20:28:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:20,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648855131] [2022-07-19 20:28:20,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648855131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:20,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:20,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:28:20,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957165082] [2022-07-19 20:28:20,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:20,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:28:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:20,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:28:20,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:28:20,968 INFO L87 Difference]: Start difference. First operand 39336 states and 58296 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:25,980 INFO L93 Difference]: Finished difference Result 71503 states and 104873 transitions. [2022-07-19 20:28:25,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:28:25,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-19 20:28:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:26,089 INFO L225 Difference]: With dead ends: 71503 [2022-07-19 20:28:26,090 INFO L226 Difference]: Without dead ends: 71501 [2022-07-19 20:28:26,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:28:26,111 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:26,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:28:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71501 states. [2022-07-19 20:28:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71501 to 40872. [2022-07-19 20:28:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40872 states, 40870 states have (on average 1.4608270124785907) internal successors, (59704), 40871 states have internal predecessors, (59704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40872 states to 40872 states and 59704 transitions. [2022-07-19 20:28:29,299 INFO L78 Accepts]: Start accepts. Automaton has 40872 states and 59704 transitions. Word has length 109 [2022-07-19 20:28:29,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:29,300 INFO L495 AbstractCegarLoop]: Abstraction has 40872 states and 59704 transitions. [2022-07-19 20:28:29,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:29,301 INFO L276 IsEmpty]: Start isEmpty. Operand 40872 states and 59704 transitions. [2022-07-19 20:28:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 20:28:29,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:29,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:29,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:28:29,306 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:29,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1928449621, now seen corresponding path program 1 times [2022-07-19 20:28:29,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:29,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310764787] [2022-07-19 20:28:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:29,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:29,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:29,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310764787] [2022-07-19 20:28:29,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310764787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:29,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:29,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:28:29,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129803289] [2022-07-19 20:28:29,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:29,394 INFO L87 Difference]: Start difference. First operand 40872 states and 59704 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:34,684 INFO L93 Difference]: Finished difference Result 43878 states and 64535 transitions. [2022-07-19 20:28:34,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:34,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-19 20:28:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:34,757 INFO L225 Difference]: With dead ends: 43878 [2022-07-19 20:28:34,758 INFO L226 Difference]: Without dead ends: 42374 [2022-07-19 20:28:34,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:34,774 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 878 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:34,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 844 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 20:28:34,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42374 states. [2022-07-19 20:28:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42374 to 42374. [2022-07-19 20:28:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42374 states, 42372 states have (on average 1.4493061455678278) internal successors, (61410), 42373 states have internal predecessors, (61410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42374 states to 42374 states and 61410 transitions. [2022-07-19 20:28:38,305 INFO L78 Accepts]: Start accepts. Automaton has 42374 states and 61410 transitions. Word has length 136 [2022-07-19 20:28:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:38,305 INFO L495 AbstractCegarLoop]: Abstraction has 42374 states and 61410 transitions. [2022-07-19 20:28:38,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 42374 states and 61410 transitions. [2022-07-19 20:28:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 20:28:38,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:38,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:38,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:28:38,312 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:38,313 INFO L85 PathProgramCache]: Analyzing trace with hash -405616538, now seen corresponding path program 1 times [2022-07-19 20:28:38,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:38,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847902289] [2022-07-19 20:28:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:38,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:28:38,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:38,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847902289] [2022-07-19 20:28:38,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847902289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:38,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:38,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:28:38,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692946057] [2022-07-19 20:28:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:38,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:28:38,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:28:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:38,385 INFO L87 Difference]: Start difference. First operand 42374 states and 61410 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:28:43,454 INFO L93 Difference]: Finished difference Result 48386 states and 69654 transitions. [2022-07-19 20:28:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:28:43,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-07-19 20:28:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:28:43,511 INFO L225 Difference]: With dead ends: 48386 [2022-07-19 20:28:43,511 INFO L226 Difference]: Without dead ends: 45380 [2022-07-19 20:28:43,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:28:43,523 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 1101 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:28:43,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 540 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 20:28:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45380 states. [2022-07-19 20:28:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45380 to 45378. [2022-07-19 20:28:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45378 states, 45376 states have (on average 1.4310869181946404) internal successors, (64937), 45377 states have internal predecessors, (64937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45378 states to 45378 states and 64937 transitions. [2022-07-19 20:28:46,601 INFO L78 Accepts]: Start accepts. Automaton has 45378 states and 64937 transitions. Word has length 138 [2022-07-19 20:28:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:28:46,601 INFO L495 AbstractCegarLoop]: Abstraction has 45378 states and 64937 transitions. [2022-07-19 20:28:46,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 20:28:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 45378 states and 64937 transitions. [2022-07-19 20:28:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 20:28:46,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:28:46,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:28:46,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:28:46,623 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:28:46,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:28:46,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2022-07-19 20:28:46,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:28:46,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266242720] [2022-07-19 20:28:46,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:28:46,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:28:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:28:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 20:28:46,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:28:46,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266242720] [2022-07-19 20:28:46,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266242720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:28:46,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:28:46,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:28:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419907339] [2022-07-19 20:28:46,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:28:46,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:28:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:28:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:28:46,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:28:46,745 INFO L87 Difference]: Start difference. First operand 45378 states and 64937 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)