./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/eca-rers2012/Problem03_label55.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 892d3c9e0b7c167d810581087b0633fb7bb5cd8a7fe1ab934154adc1945085ff --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 22:49:03,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:49:03,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:49:03,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:49:03,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:49:03,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:49:03,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:49:03,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:49:03,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:49:03,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:49:03,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:49:04,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:49:04,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:49:04,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:49:04,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:49:04,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:49:04,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:49:04,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:49:04,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:49:04,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:49:04,007 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:49:04,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:49:04,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:49:04,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:49:04,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:49:04,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:49:04,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:49:04,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:49:04,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:49:04,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:49:04,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:49:04,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:49:04,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:49:04,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:49:04,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:49:04,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:49:04,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:49:04,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:49:04,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:49:04,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:49:04,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:49:04,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:49:04,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 22:49:04,041 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:49:04,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:49:04,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:49:04,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:49:04,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:49:04,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:49:04,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:49:04,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:49:04,044 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:49:04,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:49:04,045 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:49:04,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 22:49:04,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:49:04,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:49:04,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:49:04,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:49:04,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:49:04,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:49:04,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:49:04,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:49:04,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:49:04,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:49:04,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:49:04,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:49:04,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:49:04,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:49:04,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:49:04,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:49:04,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 22:49:04,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 22:49:04,048 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:49:04,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:49:04,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:49:04,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 892d3c9e0b7c167d810581087b0633fb7bb5cd8a7fe1ab934154adc1945085ff [2022-07-20 22:49:04,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:49:04,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:49:04,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:49:04,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:49:04,363 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:49:04,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label55.c [2022-07-20 22:49:04,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/829e438dd/c319744f386c4513b2d5074640b5fe22/FLAGfcca32420 [2022-07-20 22:49:04,951 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:49:04,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label55.c [2022-07-20 22:49:04,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/829e438dd/c319744f386c4513b2d5074640b5fe22/FLAGfcca32420 [2022-07-20 22:49:05,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/829e438dd/c319744f386c4513b2d5074640b5fe22 [2022-07-20 22:49:05,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:49:05,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:49:05,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:49:05,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:49:05,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:49:05,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:05,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f1ffdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05, skipping insertion in model container [2022-07-20 22:49:05,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:05,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:49:05,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:49:05,672 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/eca-rers2012/Problem03_label55.c[56086,56099] [2022-07-20 22:49:05,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:49:05,708 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:49:05,845 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/eca-rers2012/Problem03_label55.c[56086,56099] [2022-07-20 22:49:05,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:49:05,871 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:49:05,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05 WrapperNode [2022-07-20 22:49:05,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:49:05,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:49:05,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:49:05,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:49:05,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:05,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:06,004 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-20 22:49:06,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:49:06,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:49:06,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:49:06,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:49:06,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:06,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:06,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:06,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:06,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:06,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:06,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:06,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:49:06,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:49:06,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:49:06,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:49:06,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (1/1) ... [2022-07-20 22:49:06,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:49:06,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:49:06,164 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) [2022-07-20 22:49:06,176 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 [2022-07-20 22:49:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:49:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 22:49:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:49:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:49:06,295 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:49:06,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:49:07,455 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:49:07,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:49:07,467 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 22:49:07,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:49:07 BoogieIcfgContainer [2022-07-20 22:49:07,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:49:07,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:49:07,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:49:07,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:49:07,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:49:05" (1/3) ... [2022-07-20 22:49:07,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c106e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:49:07, skipping insertion in model container [2022-07-20 22:49:07,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:49:05" (2/3) ... [2022-07-20 22:49:07,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c106e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:49:07, skipping insertion in model container [2022-07-20 22:49:07,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:49:07" (3/3) ... [2022-07-20 22:49:07,476 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label55.c [2022-07-20 22:49:07,487 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:49:07,487 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:49:07,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:49:07,535 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@14e9adc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@567e3e48 [2022-07-20 22:49:07,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:49:07,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-20 22:49:07,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:07,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:07,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash -317002646, now seen corresponding path program 1 times [2022-07-20 22:49:07,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:07,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731075081] [2022-07-20 22:49:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:07,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:08,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731075081] [2022-07-20 22:49:08,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731075081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:08,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:08,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103977053] [2022-07-20 22:49:08,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:08,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:08,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:08,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:08,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:08,088 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:08,901 INFO L93 Difference]: Finished difference Result 843 states and 1493 transitions. [2022-07-20 22:49:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:08,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-07-20 22:49:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:08,913 INFO L225 Difference]: With dead ends: 843 [2022-07-20 22:49:08,918 INFO L226 Difference]: Without dead ends: 463 [2022-07-20 22:49:08,923 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 [2022-07-20 22:49:08,925 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 112 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:08,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 121 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:49:08,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-20 22:49:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2022-07-20 22:49:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6339285714285714) internal successors, (732), 448 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 732 transitions. [2022-07-20 22:49:08,991 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 732 transitions. Word has length 162 [2022-07-20 22:49:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:08,992 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 732 transitions. [2022-07-20 22:49:08,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 732 transitions. [2022-07-20 22:49:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-20 22:49:08,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:08,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:08,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 22:49:08,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash 331981558, now seen corresponding path program 1 times [2022-07-20 22:49:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:08,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570553453] [2022-07-20 22:49:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:08,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:09,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:09,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570553453] [2022-07-20 22:49:09,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570553453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:09,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:09,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:09,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002874674] [2022-07-20 22:49:09,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:09,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:09,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:09,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:09,079 INFO L87 Difference]: Start difference. First operand 449 states and 732 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:09,667 INFO L93 Difference]: Finished difference Result 1333 states and 2180 transitions. [2022-07-20 22:49:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:09,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2022-07-20 22:49:09,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:09,675 INFO L225 Difference]: With dead ends: 1333 [2022-07-20 22:49:09,675 INFO L226 Difference]: Without dead ends: 886 [2022-07-20 22:49:09,676 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 [2022-07-20 22:49:09,677 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:09,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 114 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:49:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-07-20 22:49:09,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2022-07-20 22:49:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.6163450624290578) internal successors, (1424), 881 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1424 transitions. [2022-07-20 22:49:09,710 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1424 transitions. Word has length 168 [2022-07-20 22:49:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:09,710 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1424 transitions. [2022-07-20 22:49:09,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:09,711 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1424 transitions. [2022-07-20 22:49:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-20 22:49:09,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:09,715 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:09,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 22:49:09,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1835334450, now seen corresponding path program 1 times [2022-07-20 22:49:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:09,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941538044] [2022-07-20 22:49:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:09,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:09,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941538044] [2022-07-20 22:49:09,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941538044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:09,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:09,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477387942] [2022-07-20 22:49:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:09,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:09,773 INFO L87 Difference]: Start difference. First operand 882 states and 1424 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:10,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:10,302 INFO L93 Difference]: Finished difference Result 2575 states and 4172 transitions. [2022-07-20 22:49:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:10,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2022-07-20 22:49:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:10,308 INFO L225 Difference]: With dead ends: 2575 [2022-07-20 22:49:10,308 INFO L226 Difference]: Without dead ends: 1695 [2022-07-20 22:49:10,310 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 [2022-07-20 22:49:10,311 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:10,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 192 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:49:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-07-20 22:49:10,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2022-07-20 22:49:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 1.3984651711924438) internal successors, (2369), 1694 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2369 transitions. [2022-07-20 22:49:10,340 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2369 transitions. Word has length 168 [2022-07-20 22:49:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:10,340 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2369 transitions. [2022-07-20 22:49:10,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2369 transitions. [2022-07-20 22:49:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-20 22:49:10,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:10,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:10,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 22:49:10,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:10,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1871241535, now seen corresponding path program 1 times [2022-07-20 22:49:10,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:10,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207934285] [2022-07-20 22:49:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:10,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:10,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:10,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207934285] [2022-07-20 22:49:10,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207934285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:10,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:10,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945496470] [2022-07-20 22:49:10,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:10,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:10,462 INFO L87 Difference]: Start difference. First operand 1695 states and 2369 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:11,038 INFO L93 Difference]: Finished difference Result 5062 states and 7081 transitions. [2022-07-20 22:49:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:11,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-07-20 22:49:11,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:11,049 INFO L225 Difference]: With dead ends: 5062 [2022-07-20 22:49:11,050 INFO L226 Difference]: Without dead ends: 3369 [2022-07-20 22:49:11,053 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 [2022-07-20 22:49:11,060 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:11,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 216 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:49:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2022-07-20 22:49:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3360. [2022-07-20 22:49:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3359 states have (on average 1.3846382852039298) internal successors, (4651), 3359 states have internal predecessors, (4651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 4651 transitions. [2022-07-20 22:49:11,118 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 4651 transitions. Word has length 174 [2022-07-20 22:49:11,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:11,118 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 4651 transitions. [2022-07-20 22:49:11,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 4651 transitions. [2022-07-20 22:49:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-20 22:49:11,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:11,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:11,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 22:49:11,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:11,125 INFO L85 PathProgramCache]: Analyzing trace with hash 962684326, now seen corresponding path program 1 times [2022-07-20 22:49:11,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:11,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951724281] [2022-07-20 22:49:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:11,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:11,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:11,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951724281] [2022-07-20 22:49:11,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951724281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:11,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:11,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750739486] [2022-07-20 22:49:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:11,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:11,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:11,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:11,203 INFO L87 Difference]: Start difference. First operand 3360 states and 4651 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:11,789 INFO L93 Difference]: Finished difference Result 10006 states and 13851 transitions. [2022-07-20 22:49:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:11,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-07-20 22:49:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:11,810 INFO L225 Difference]: With dead ends: 10006 [2022-07-20 22:49:11,810 INFO L226 Difference]: Without dead ends: 6648 [2022-07-20 22:49:11,816 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 [2022-07-20 22:49:11,817 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 243 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:11,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 224 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:49:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6648 states. [2022-07-20 22:49:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6648 to 6641. [2022-07-20 22:49:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6641 states, 6640 states have (on average 1.3284638554216868) internal successors, (8821), 6640 states have internal predecessors, (8821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6641 states to 6641 states and 8821 transitions. [2022-07-20 22:49:11,923 INFO L78 Accepts]: Start accepts. Automaton has 6641 states and 8821 transitions. Word has length 175 [2022-07-20 22:49:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:11,924 INFO L495 AbstractCegarLoop]: Abstraction has 6641 states and 8821 transitions. [2022-07-20 22:49:11,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6641 states and 8821 transitions. [2022-07-20 22:49:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-20 22:49:11,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:11,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:11,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 22:49:11,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:11,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1968582037, now seen corresponding path program 1 times [2022-07-20 22:49:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:11,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783661128] [2022-07-20 22:49:11,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:11,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 22:49:12,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:12,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783661128] [2022-07-20 22:49:12,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783661128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:12,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:12,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:12,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251085539] [2022-07-20 22:49:12,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:12,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:12,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:12,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:12,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:12,002 INFO L87 Difference]: Start difference. First operand 6641 states and 8821 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:12,627 INFO L93 Difference]: Finished difference Result 18403 states and 24736 transitions. [2022-07-20 22:49:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 176 [2022-07-20 22:49:12,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:12,665 INFO L225 Difference]: With dead ends: 18403 [2022-07-20 22:49:12,666 INFO L226 Difference]: Without dead ends: 12170 [2022-07-20 22:49:12,675 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 [2022-07-20 22:49:12,676 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:12,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:49:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2022-07-20 22:49:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 12127. [2022-07-20 22:49:12,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12127 states, 12126 states have (on average 1.318489196767277) internal successors, (15988), 12126 states have internal predecessors, (15988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12127 states to 12127 states and 15988 transitions. [2022-07-20 22:49:12,887 INFO L78 Accepts]: Start accepts. Automaton has 12127 states and 15988 transitions. Word has length 176 [2022-07-20 22:49:12,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:12,887 INFO L495 AbstractCegarLoop]: Abstraction has 12127 states and 15988 transitions. [2022-07-20 22:49:12,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12127 states and 15988 transitions. [2022-07-20 22:49:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-20 22:49:12,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:12,902 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:12,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 22:49:12,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:12,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2124767808, now seen corresponding path program 1 times [2022-07-20 22:49:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:12,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471354321] [2022-07-20 22:49:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-20 22:49:12,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:12,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471354321] [2022-07-20 22:49:12,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471354321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:12,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:12,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:49:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981804035] [2022-07-20 22:49:12,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:12,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:12,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:12,960 INFO L87 Difference]: Start difference. First operand 12127 states and 15988 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:13,646 INFO L93 Difference]: Finished difference Result 31583 states and 42424 transitions. [2022-07-20 22:49:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:13,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-07-20 22:49:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:13,682 INFO L225 Difference]: With dead ends: 31583 [2022-07-20 22:49:13,683 INFO L226 Difference]: Without dead ends: 19864 [2022-07-20 22:49:13,696 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 [2022-07-20 22:49:13,696 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 218 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:13,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 362 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:49:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19864 states. [2022-07-20 22:49:13,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19864 to 19854. [2022-07-20 22:49:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19854 states, 19853 states have (on average 1.279806578350879) internal successors, (25408), 19853 states have internal predecessors, (25408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19854 states to 19854 states and 25408 transitions. [2022-07-20 22:49:14,017 INFO L78 Accepts]: Start accepts. Automaton has 19854 states and 25408 transitions. Word has length 183 [2022-07-20 22:49:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:14,017 INFO L495 AbstractCegarLoop]: Abstraction has 19854 states and 25408 transitions. [2022-07-20 22:49:14,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 19854 states and 25408 transitions. [2022-07-20 22:49:14,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-20 22:49:14,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:14,035 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:14,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 22:49:14,038 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:14,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1144319502, now seen corresponding path program 1 times [2022-07-20 22:49:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:14,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145804156] [2022-07-20 22:49:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-20 22:49:14,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:14,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145804156] [2022-07-20 22:49:14,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145804156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:14,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:14,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:49:14,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746368800] [2022-07-20 22:49:14,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:14,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:49:14,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:14,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:49:14,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:49:14,103 INFO L87 Difference]: Start difference. First operand 19854 states and 25408 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:15,001 INFO L93 Difference]: Finished difference Result 45523 states and 58726 transitions. [2022-07-20 22:49:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:49:15,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 187 [2022-07-20 22:49:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:15,057 INFO L225 Difference]: With dead ends: 45523 [2022-07-20 22:49:15,057 INFO L226 Difference]: Without dead ends: 26077 [2022-07-20 22:49:15,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:49:15,080 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 563 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:15,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 53 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:49:15,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26077 states. [2022-07-20 22:49:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26077 to 26068. [2022-07-20 22:49:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26068 states, 26067 states have (on average 1.2348946944412476) internal successors, (32190), 26067 states have internal predecessors, (32190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26068 states to 26068 states and 32190 transitions. [2022-07-20 22:49:15,473 INFO L78 Accepts]: Start accepts. Automaton has 26068 states and 32190 transitions. Word has length 187 [2022-07-20 22:49:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:15,473 INFO L495 AbstractCegarLoop]: Abstraction has 26068 states and 32190 transitions. [2022-07-20 22:49:15,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:15,474 INFO L276 IsEmpty]: Start isEmpty. Operand 26068 states and 32190 transitions. [2022-07-20 22:49:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-20 22:49:15,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:15,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:15,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 22:49:15,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:15,499 INFO L85 PathProgramCache]: Analyzing trace with hash -496785840, now seen corresponding path program 1 times [2022-07-20 22:49:15,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:15,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993413009] [2022-07-20 22:49:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:15,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:15,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:15,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993413009] [2022-07-20 22:49:15,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993413009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:15,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:15,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:15,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861361496] [2022-07-20 22:49:15,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:15,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:15,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:15,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:15,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:15,644 INFO L87 Difference]: Start difference. First operand 26068 states and 32190 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:16,436 INFO L93 Difference]: Finished difference Result 67615 states and 83814 transitions. [2022-07-20 22:49:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2022-07-20 22:49:16,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:16,499 INFO L225 Difference]: With dead ends: 67615 [2022-07-20 22:49:16,500 INFO L226 Difference]: Without dead ends: 41955 [2022-07-20 22:49:16,519 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 [2022-07-20 22:49:16,520 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 207 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:16,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 108 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:49:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41955 states. [2022-07-20 22:49:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41955 to 41940. [2022-07-20 22:49:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41940 states, 41939 states have (on average 1.2147643005317246) internal successors, (50946), 41939 states have internal predecessors, (50946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41940 states to 41940 states and 50946 transitions. [2022-07-20 22:49:17,193 INFO L78 Accepts]: Start accepts. Automaton has 41940 states and 50946 transitions. Word has length 190 [2022-07-20 22:49:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:17,193 INFO L495 AbstractCegarLoop]: Abstraction has 41940 states and 50946 transitions. [2022-07-20 22:49:17,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 41940 states and 50946 transitions. [2022-07-20 22:49:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-20 22:49:17,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:17,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:17,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 22:49:17,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:17,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:17,234 INFO L85 PathProgramCache]: Analyzing trace with hash -99342165, now seen corresponding path program 1 times [2022-07-20 22:49:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:17,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738907549] [2022-07-20 22:49:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:17,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:17,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738907549] [2022-07-20 22:49:17,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738907549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:17,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:17,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:17,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587754083] [2022-07-20 22:49:17,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:17,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:17,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:17,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:17,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:17,292 INFO L87 Difference]: Start difference. First operand 41940 states and 50946 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:18,052 INFO L93 Difference]: Finished difference Result 98164 states and 120488 transitions. [2022-07-20 22:49:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:18,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2022-07-20 22:49:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:18,251 INFO L225 Difference]: With dead ends: 98164 [2022-07-20 22:49:18,251 INFO L226 Difference]: Without dead ends: 57241 [2022-07-20 22:49:18,287 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 [2022-07-20 22:49:18,288 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 202 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:18,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 180 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:49:18,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57241 states. [2022-07-20 22:49:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57241 to 57213. [2022-07-20 22:49:18,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57213 states, 57212 states have (on average 1.2304411661889114) internal successors, (70396), 57212 states have internal predecessors, (70396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57213 states to 57213 states and 70396 transitions. [2022-07-20 22:49:18,934 INFO L78 Accepts]: Start accepts. Automaton has 57213 states and 70396 transitions. Word has length 192 [2022-07-20 22:49:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:18,934 INFO L495 AbstractCegarLoop]: Abstraction has 57213 states and 70396 transitions. [2022-07-20 22:49:18,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 57213 states and 70396 transitions. [2022-07-20 22:49:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-20 22:49:18,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:18,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:18,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 22:49:18,958 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash 305930593, now seen corresponding path program 1 times [2022-07-20 22:49:18,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:18,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059525533] [2022-07-20 22:49:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:18,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:19,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:19,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059525533] [2022-07-20 22:49:19,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059525533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:19,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:19,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:19,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956109007] [2022-07-20 22:49:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:19,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:19,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:19,026 INFO L87 Difference]: Start difference. First operand 57213 states and 70396 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:20,124 INFO L93 Difference]: Finished difference Result 137641 states and 169699 transitions. [2022-07-20 22:49:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:20,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2022-07-20 22:49:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:20,236 INFO L225 Difference]: With dead ends: 137641 [2022-07-20 22:49:20,236 INFO L226 Difference]: Without dead ends: 81445 [2022-07-20 22:49:20,282 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 [2022-07-20 22:49:20,282 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 226 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:20,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 164 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:49:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81445 states. [2022-07-20 22:49:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81445 to 81441. [2022-07-20 22:49:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81441 states, 81440 states have (on average 1.231630648330059) internal successors, (100304), 81440 states have internal predecessors, (100304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81441 states to 81441 states and 100304 transitions. [2022-07-20 22:49:21,358 INFO L78 Accepts]: Start accepts. Automaton has 81441 states and 100304 transitions. Word has length 196 [2022-07-20 22:49:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:21,359 INFO L495 AbstractCegarLoop]: Abstraction has 81441 states and 100304 transitions. [2022-07-20 22:49:21,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:21,359 INFO L276 IsEmpty]: Start isEmpty. Operand 81441 states and 100304 transitions. [2022-07-20 22:49:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-20 22:49:21,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:21,385 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:21,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 22:49:21,385 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:21,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2091308555, now seen corresponding path program 1 times [2022-07-20 22:49:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:21,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772624772] [2022-07-20 22:49:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:21,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-20 22:49:21,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:21,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772624772] [2022-07-20 22:49:21,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772624772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:21,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:21,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:49:21,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22462161] [2022-07-20 22:49:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:21,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:49:21,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:49:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:49:21,452 INFO L87 Difference]: Start difference. First operand 81441 states and 100304 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:23,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:23,360 INFO L93 Difference]: Finished difference Result 206240 states and 254661 transitions. [2022-07-20 22:49:23,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:49:23,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 207 [2022-07-20 22:49:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:23,554 INFO L225 Difference]: With dead ends: 206240 [2022-07-20 22:49:23,555 INFO L226 Difference]: Without dead ends: 125816 [2022-07-20 22:49:23,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:49:23,595 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 546 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:23,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 476 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:49:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125816 states. [2022-07-20 22:49:24,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125816 to 125596. [2022-07-20 22:49:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125596 states, 125595 states have (on average 1.217588279788208) internal successors, (152923), 125595 states have internal predecessors, (152923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125596 states to 125596 states and 152923 transitions. [2022-07-20 22:49:25,432 INFO L78 Accepts]: Start accepts. Automaton has 125596 states and 152923 transitions. Word has length 207 [2022-07-20 22:49:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:25,432 INFO L495 AbstractCegarLoop]: Abstraction has 125596 states and 152923 transitions. [2022-07-20 22:49:25,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 125596 states and 152923 transitions. [2022-07-20 22:49:25,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-20 22:49:25,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:25,484 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:25,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 22:49:25,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -254767863, now seen corresponding path program 1 times [2022-07-20 22:49:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:25,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190597745] [2022-07-20 22:49:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-20 22:49:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:25,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190597745] [2022-07-20 22:49:25,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190597745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:25,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:25,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:49:25,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968688695] [2022-07-20 22:49:25,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:25,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:25,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:25,563 INFO L87 Difference]: Start difference. First operand 125596 states and 152923 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:26,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:26,728 INFO L93 Difference]: Finished difference Result 217962 states and 268207 transitions. [2022-07-20 22:49:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:26,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 228 [2022-07-20 22:49:26,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:26,848 INFO L225 Difference]: With dead ends: 217962 [2022-07-20 22:49:26,849 INFO L226 Difference]: Without dead ends: 94810 [2022-07-20 22:49:26,935 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 [2022-07-20 22:49:26,935 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 171 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:26,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 370 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:49:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94810 states. [2022-07-20 22:49:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94810 to 88914. [2022-07-20 22:49:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88914 states, 88913 states have (on average 1.1646440902905086) internal successors, (103552), 88913 states have internal predecessors, (103552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:28,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88914 states to 88914 states and 103552 transitions. [2022-07-20 22:49:28,497 INFO L78 Accepts]: Start accepts. Automaton has 88914 states and 103552 transitions. Word has length 228 [2022-07-20 22:49:28,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:28,497 INFO L495 AbstractCegarLoop]: Abstraction has 88914 states and 103552 transitions. [2022-07-20 22:49:28,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 88914 states and 103552 transitions. [2022-07-20 22:49:28,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-20 22:49:28,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:28,516 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, 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] [2022-07-20 22:49:28,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 22:49:28,517 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:28,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:28,517 INFO L85 PathProgramCache]: Analyzing trace with hash -621277898, now seen corresponding path program 1 times [2022-07-20 22:49:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:28,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992046041] [2022-07-20 22:49:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:28,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:28,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:28,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992046041] [2022-07-20 22:49:28,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992046041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:28,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:28,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:28,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599519725] [2022-07-20 22:49:28,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:28,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:28,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:28,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:28,611 INFO L87 Difference]: Start difference. First operand 88914 states and 103552 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:29,587 INFO L93 Difference]: Finished difference Result 168059 states and 195531 transitions. [2022-07-20 22:49:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:29,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2022-07-20 22:49:29,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:29,696 INFO L225 Difference]: With dead ends: 168059 [2022-07-20 22:49:29,696 INFO L226 Difference]: Without dead ends: 88711 [2022-07-20 22:49:29,720 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 [2022-07-20 22:49:29,720 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:29,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 150 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 22:49:29,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88711 states. [2022-07-20 22:49:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88711 to 88711. [2022-07-20 22:49:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88711 states, 88710 states have (on average 1.1647503099988727) internal successors, (103325), 88710 states have internal predecessors, (103325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88711 states to 88711 states and 103325 transitions. [2022-07-20 22:49:31,113 INFO L78 Accepts]: Start accepts. Automaton has 88711 states and 103325 transitions. Word has length 236 [2022-07-20 22:49:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:31,113 INFO L495 AbstractCegarLoop]: Abstraction has 88711 states and 103325 transitions. [2022-07-20 22:49:31,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 88711 states and 103325 transitions. [2022-07-20 22:49:31,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-20 22:49:31,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:31,136 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 22:49:31,136 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash -805026293, now seen corresponding path program 1 times [2022-07-20 22:49:31,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:31,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066272693] [2022-07-20 22:49:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:31,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:31,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:31,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066272693] [2022-07-20 22:49:31,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066272693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:31,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:31,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:49:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62386925] [2022-07-20 22:49:31,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:31,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:49:31,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:31,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:49:31,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:49:31,244 INFO L87 Difference]: Start difference. First operand 88711 states and 103325 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:32,425 INFO L93 Difference]: Finished difference Result 170141 states and 198635 transitions. [2022-07-20 22:49:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:49:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2022-07-20 22:49:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:32,741 INFO L225 Difference]: With dead ends: 170141 [2022-07-20 22:49:32,741 INFO L226 Difference]: Without dead ends: 96485 [2022-07-20 22:49:32,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:49:32,773 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 360 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:32,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 114 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:49:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96485 states. [2022-07-20 22:49:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96485 to 93399. [2022-07-20 22:49:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93399 states, 93398 states have (on average 1.1642005182123814) internal successors, (108734), 93398 states have internal predecessors, (108734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93399 states to 93399 states and 108734 transitions. [2022-07-20 22:49:33,893 INFO L78 Accepts]: Start accepts. Automaton has 93399 states and 108734 transitions. Word has length 264 [2022-07-20 22:49:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:33,893 INFO L495 AbstractCegarLoop]: Abstraction has 93399 states and 108734 transitions. [2022-07-20 22:49:33,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 93399 states and 108734 transitions. [2022-07-20 22:49:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-07-20 22:49:33,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:33,921 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:33,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 22:49:33,921 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1682192666, now seen corresponding path program 1 times [2022-07-20 22:49:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:33,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096917136] [2022-07-20 22:49:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-20 22:49:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:34,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096917136] [2022-07-20 22:49:34,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096917136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:34,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:34,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:49:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955654921] [2022-07-20 22:49:34,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:34,216 INFO L87 Difference]: Start difference. First operand 93399 states and 108734 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:35,181 INFO L93 Difference]: Finished difference Result 185792 states and 216123 transitions. [2022-07-20 22:49:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:35,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 284 [2022-07-20 22:49:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:35,297 INFO L225 Difference]: With dead ends: 185792 [2022-07-20 22:49:35,297 INFO L226 Difference]: Without dead ends: 85702 [2022-07-20 22:49:35,364 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 [2022-07-20 22:49:35,365 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 163 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:35,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 375 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:49:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85702 states. [2022-07-20 22:49:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85702 to 67382. [2022-07-20 22:49:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67382 states, 67381 states have (on average 1.1146465620872352) internal successors, (75106), 67381 states have internal predecessors, (75106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67382 states to 67382 states and 75106 transitions. [2022-07-20 22:49:36,398 INFO L78 Accepts]: Start accepts. Automaton has 67382 states and 75106 transitions. Word has length 284 [2022-07-20 22:49:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:36,398 INFO L495 AbstractCegarLoop]: Abstraction has 67382 states and 75106 transitions. [2022-07-20 22:49:36,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 67382 states and 75106 transitions. [2022-07-20 22:49:36,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-20 22:49:36,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:36,415 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, 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, 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] [2022-07-20 22:49:36,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 22:49:36,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1771235932, now seen corresponding path program 1 times [2022-07-20 22:49:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:36,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555815689] [2022-07-20 22:49:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:36,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:36,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555815689] [2022-07-20 22:49:36,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555815689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:36,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:36,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:49:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155344242] [2022-07-20 22:49:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:49:36,534 INFO L87 Difference]: Start difference. First operand 67382 states and 75106 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:37,464 INFO L93 Difference]: Finished difference Result 129072 states and 143708 transitions. [2022-07-20 22:49:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:37,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 292 [2022-07-20 22:49:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:37,539 INFO L225 Difference]: With dead ends: 129072 [2022-07-20 22:49:37,539 INFO L226 Difference]: Without dead ends: 69224 [2022-07-20 22:49:37,576 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 [2022-07-20 22:49:37,577 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 85 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:37,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 110 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:49:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69224 states. [2022-07-20 22:49:38,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69224 to 69006. [2022-07-20 22:49:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69006 states, 69005 states have (on average 1.1108180566625607) internal successors, (76652), 69005 states have internal predecessors, (76652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69006 states to 69006 states and 76652 transitions. [2022-07-20 22:49:38,397 INFO L78 Accepts]: Start accepts. Automaton has 69006 states and 76652 transitions. Word has length 292 [2022-07-20 22:49:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:38,397 INFO L495 AbstractCegarLoop]: Abstraction has 69006 states and 76652 transitions. [2022-07-20 22:49:38,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 69006 states and 76652 transitions. [2022-07-20 22:49:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-20 22:49:38,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:38,413 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-20 22:49:38,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 22:49:38,413 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2012492047, now seen corresponding path program 1 times [2022-07-20 22:49:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:38,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509025944] [2022-07-20 22:49:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:38,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:49:38,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:38,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509025944] [2022-07-20 22:49:38,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509025944] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:49:38,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784269203] [2022-07-20 22:49:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:38,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:49:38,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:49:38,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 22:49:38,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 22:49:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:38,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:49:38,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:49:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-07-20 22:49:39,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:49:39,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784269203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:39,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:49:39,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-07-20 22:49:39,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885999344] [2022-07-20 22:49:39,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:39,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:39,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:39,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:49:39,076 INFO L87 Difference]: Start difference. First operand 69006 states and 76652 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:40,176 INFO L93 Difference]: Finished difference Result 156757 states and 175249 transitions. [2022-07-20 22:49:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:40,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 294 [2022-07-20 22:49:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:40,308 INFO L225 Difference]: With dead ends: 156757 [2022-07-20 22:49:40,308 INFO L226 Difference]: Without dead ends: 88770 [2022-07-20 22:49:40,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:49:40,357 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 93 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:40,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 88 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:49:40,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88770 states. [2022-07-20 22:49:41,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88770 to 86324. [2022-07-20 22:49:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86324 states, 86323 states have (on average 1.1125424278581606) internal successors, (96038), 86323 states have internal predecessors, (96038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86324 states to 86324 states and 96038 transitions. [2022-07-20 22:49:41,533 INFO L78 Accepts]: Start accepts. Automaton has 86324 states and 96038 transitions. Word has length 294 [2022-07-20 22:49:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:41,534 INFO L495 AbstractCegarLoop]: Abstraction has 86324 states and 96038 transitions. [2022-07-20 22:49:41,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 86324 states and 96038 transitions. [2022-07-20 22:49:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-20 22:49:41,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:41,550 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:41,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-20 22:49:41,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-20 22:49:41,756 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:41,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:41,756 INFO L85 PathProgramCache]: Analyzing trace with hash 250008961, now seen corresponding path program 1 times [2022-07-20 22:49:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:41,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363151536] [2022-07-20 22:49:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:41,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-20 22:49:41,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:41,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363151536] [2022-07-20 22:49:41,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363151536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:41,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:49:41,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:49:41,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119018547] [2022-07-20 22:49:41,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:41,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:49:41,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:41,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:49:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:49:41,858 INFO L87 Difference]: Start difference. First operand 86324 states and 96038 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:43,199 INFO L93 Difference]: Finished difference Result 166607 states and 185364 transitions. [2022-07-20 22:49:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:49:43,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 300 [2022-07-20 22:49:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:43,305 INFO L225 Difference]: With dead ends: 166607 [2022-07-20 22:49:43,305 INFO L226 Difference]: Without dead ends: 87003 [2022-07-20 22:49:43,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:49:43,343 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 366 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:43,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 99 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:49:43,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87003 states. [2022-07-20 22:49:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87003 to 85309. [2022-07-20 22:49:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85309 states, 85308 states have (on average 1.1124513527453463) internal successors, (94901), 85308 states have internal predecessors, (94901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:44,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85309 states to 85309 states and 94901 transitions. [2022-07-20 22:49:44,389 INFO L78 Accepts]: Start accepts. Automaton has 85309 states and 94901 transitions. Word has length 300 [2022-07-20 22:49:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:44,390 INFO L495 AbstractCegarLoop]: Abstraction has 85309 states and 94901 transitions. [2022-07-20 22:49:44,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 85309 states and 94901 transitions. [2022-07-20 22:49:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-20 22:49:44,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:44,407 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:44,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 22:49:44,407 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:44,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1883543636, now seen corresponding path program 1 times [2022-07-20 22:49:44,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:44,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535562252] [2022-07-20 22:49:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:44,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 129 proven. 6 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-20 22:49:44,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:44,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535562252] [2022-07-20 22:49:44,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535562252] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:49:44,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220594469] [2022-07-20 22:49:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:44,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:49:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:49:44,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 22:49:44,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 22:49:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:44,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 22:49:44,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:49:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-20 22:49:44,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:49:44,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220594469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:44,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:49:44,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2022-07-20 22:49:44,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380055729] [2022-07-20 22:49:44,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:44,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:49:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:49:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:49:44,854 INFO L87 Difference]: Start difference. First operand 85309 states and 94901 transitions. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:46,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:46,326 INFO L93 Difference]: Finished difference Result 227768 states and 252500 transitions. [2022-07-20 22:49:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 22:49:46,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 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 307 [2022-07-20 22:49:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:46,526 INFO L225 Difference]: With dead ends: 227768 [2022-07-20 22:49:46,526 INFO L226 Difference]: Without dead ends: 143478 [2022-07-20 22:49:46,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:49:46,589 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 876 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:46,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 571 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:49:46,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143478 states. [2022-07-20 22:49:48,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143478 to 131456. [2022-07-20 22:49:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131456 states, 131455 states have (on average 1.1081738998136244) internal successors, (145675), 131455 states have internal predecessors, (145675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131456 states to 131456 states and 145675 transitions. [2022-07-20 22:49:48,674 INFO L78 Accepts]: Start accepts. Automaton has 131456 states and 145675 transitions. Word has length 307 [2022-07-20 22:49:48,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:48,674 INFO L495 AbstractCegarLoop]: Abstraction has 131456 states and 145675 transitions. [2022-07-20 22:49:48,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 131456 states and 145675 transitions. [2022-07-20 22:49:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-07-20 22:49:48,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:48,687 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:48,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-20 22:49:48,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-07-20 22:49:48,888 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:48,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash -601397578, now seen corresponding path program 1 times [2022-07-20 22:49:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:48,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816539552] [2022-07-20 22:49:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:48,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 147 proven. 6 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-20 22:49:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:48,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816539552] [2022-07-20 22:49:48,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816539552] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:49:48,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662151533] [2022-07-20 22:49:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:48,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:49:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:49:48,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 22:49:48,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 22:49:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:49,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:49:49,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:49:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-07-20 22:49:49,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:49:49,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662151533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:49,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:49:49,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-20 22:49:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913210482] [2022-07-20 22:49:49,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:49,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:49,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:49,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:49:49,228 INFO L87 Difference]: Start difference. First operand 131456 states and 145675 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:50,511 INFO L93 Difference]: Finished difference Result 257461 states and 285598 transitions. [2022-07-20 22:49:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:50,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 325 [2022-07-20 22:49:50,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:50,668 INFO L225 Difference]: With dead ends: 257461 [2022-07-20 22:49:50,668 INFO L226 Difference]: Without dead ends: 129667 [2022-07-20 22:49:50,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:49:50,706 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 69 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:50,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 116 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 22:49:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129667 states. [2022-07-20 22:49:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129667 to 127183. [2022-07-20 22:49:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127183 states, 127182 states have (on average 1.1046688996870626) internal successors, (140494), 127182 states have internal predecessors, (140494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127183 states to 127183 states and 140494 transitions. [2022-07-20 22:49:52,473 INFO L78 Accepts]: Start accepts. Automaton has 127183 states and 140494 transitions. Word has length 325 [2022-07-20 22:49:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:52,473 INFO L495 AbstractCegarLoop]: Abstraction has 127183 states and 140494 transitions. [2022-07-20 22:49:52,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 127183 states and 140494 transitions. [2022-07-20 22:49:52,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-07-20 22:49:52,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:52,489 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:52,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 22:49:52,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:49:52,692 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash -894238348, now seen corresponding path program 1 times [2022-07-20 22:49:52,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:52,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379002606] [2022-07-20 22:49:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-20 22:49:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:53,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379002606] [2022-07-20 22:49:53,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379002606] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:49:53,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147547606] [2022-07-20 22:49:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:53,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:49:53,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:49:53,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 22:49:53,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 22:49:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:53,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:49:53,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:49:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-20 22:49:53,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:49:53,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147547606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:53,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:49:53,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-20 22:49:53,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718415966] [2022-07-20 22:49:53,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:53,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:53,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:49:53,395 INFO L87 Difference]: Start difference. First operand 127183 states and 140494 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:49:54,304 INFO L93 Difference]: Finished difference Result 252999 states and 279486 transitions. [2022-07-20 22:49:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:49:54,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 336 [2022-07-20 22:49:54,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:49:54,459 INFO L225 Difference]: With dead ends: 252999 [2022-07-20 22:49:54,459 INFO L226 Difference]: Without dead ends: 126021 [2022-07-20 22:49:54,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:49:54,529 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 61 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:49:54,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 306 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 22:49:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126021 states. [2022-07-20 22:49:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126021 to 122918. [2022-07-20 22:49:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122918 states, 122917 states have (on average 1.1009136246410178) internal successors, (135321), 122917 states have internal predecessors, (135321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122918 states to 122918 states and 135321 transitions. [2022-07-20 22:49:56,275 INFO L78 Accepts]: Start accepts. Automaton has 122918 states and 135321 transitions. Word has length 336 [2022-07-20 22:49:56,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:49:56,275 INFO L495 AbstractCegarLoop]: Abstraction has 122918 states and 135321 transitions. [2022-07-20 22:49:56,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:49:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 122918 states and 135321 transitions. [2022-07-20 22:49:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-07-20 22:49:56,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:49:56,306 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:49:56,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 22:49:56,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:49:56,508 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:49:56,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:49:56,509 INFO L85 PathProgramCache]: Analyzing trace with hash -799616828, now seen corresponding path program 1 times [2022-07-20 22:49:56,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:49:56,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388039814] [2022-07-20 22:49:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:56,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:49:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 415 proven. 101 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-20 22:49:56,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:49:56,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388039814] [2022-07-20 22:49:56,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388039814] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:49:56,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914190687] [2022-07-20 22:49:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:49:56,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:49:56,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:49:56,738 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 22:49:56,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-20 22:49:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:49:56,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:49:56,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:49:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-20 22:49:56,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:49:56,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914190687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:49:56,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:49:56,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-20 22:49:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703071737] [2022-07-20 22:49:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:49:56,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:49:56,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:49:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:49:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 22:49:56,950 INFO L87 Difference]: Start difference. First operand 122918 states and 135321 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)