./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.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/product-lines/elevator_spec2_product03.cil.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 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:26:54,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:26:54,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:26:54,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:26:54,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:26:54,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:26:54,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:26:54,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:26:54,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:26:54,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:26:54,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:26:54,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:26:54,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:26:54,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:26:54,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:26:54,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:26:54,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:26:54,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:26:54,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:26:54,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:26:54,999 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:26:55,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:26:55,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:26:55,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:26:55,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:26:55,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:26:55,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:26:55,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:26:55,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:26:55,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:26:55,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:26:55,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:26:55,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:26:55,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:26:55,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:26:55,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:26:55,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:26:55,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:26:55,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:26:55,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:26:55,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:26:55,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:26:55,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:26:55,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:26:55,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:26:55,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:26:55,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:26:55,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:26:55,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:26:55,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:26:55,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:26:55,070 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:26:55,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:26:55,071 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:26:55,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:26:55,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:26:55,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:26:55,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:26:55,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:26:55,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:26:55,072 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:26:55,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:26:55,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:26:55,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:26:55,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:26:55,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:26:55,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:26:55,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:26:55,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:26:55,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:26:55,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:26:55,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:26:55,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:26:55,074 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:26:55,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:26:55,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:26:55,074 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f [2022-07-21 04:26:55,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:26:55,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:26:55,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:26:55,384 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:26:55,385 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:26:55,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2022-07-21 04:26:55,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f7fee99/1120eb9187144702af8865e245ea8400/FLAGcef4b39c9 [2022-07-21 04:26:56,009 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:26:56,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2022-07-21 04:26:56,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f7fee99/1120eb9187144702af8865e245ea8400/FLAGcef4b39c9 [2022-07-21 04:26:56,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f7fee99/1120eb9187144702af8865e245ea8400 [2022-07-21 04:26:56,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:26:56,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:26:56,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:26:56,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:26:56,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:26:56,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:56,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3e07be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56, skipping insertion in model container [2022-07-21 04:26:56,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:56,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:26:56,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:26:56,592 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/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2022-07-21 04:26:56,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:26:56,743 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:26:56,787 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/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2022-07-21 04:26:56,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:26:56,857 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:26:56,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56 WrapperNode [2022-07-21 04:26:56,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:26:56,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:26:56,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:26:56,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:26:56,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:56,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:56,940 INFO L137 Inliner]: procedures = 92, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1071 [2022-07-21 04:26:56,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:26:56,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:26:56,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:26:56,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:26:56,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:56,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:56,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:56,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:57,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:57,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:57,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:57,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:26:57,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:26:57,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:26:57,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:26:57,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (1/1) ... [2022-07-21 04:26:57,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:26:57,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:26:57,103 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) [2022-07-21 04:26:57,117 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 [2022-07-21 04:26:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:26:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-21 04:26:57,142 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-21 04:26:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-21 04:26:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-21 04:26:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-21 04:26:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-21 04:26:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-21 04:26:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-21 04:26:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-21 04:26:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-21 04:26:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-21 04:26:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-21 04:26:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-21 04:26:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-21 04:26:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-21 04:26:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-21 04:26:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-21 04:26:57,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-21 04:26:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-21 04:26:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-21 04:26:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-21 04:26:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-21 04:26:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-21 04:26:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-21 04:26:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-21 04:26:57,145 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-21 04:26:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-21 04:26:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-21 04:26:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-21 04:26:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-21 04:26:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-21 04:26:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-21 04:26:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-21 04:26:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-21 04:26:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-21 04:26:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-21 04:26:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-07-21 04:26:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-07-21 04:26:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:26:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-21 04:26:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-21 04:26:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-21 04:26:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-21 04:26:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-21 04:26:57,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-21 04:26:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:26:57,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:26:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-21 04:26:57,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-21 04:26:57,243 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:26:57,245 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:26:57,958 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:26:57,971 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:26:57,972 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:26:57,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:26:57 BoogieIcfgContainer [2022-07-21 04:26:57,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:26:57,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:26:57,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:26:57,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:26:57,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:26:56" (1/3) ... [2022-07-21 04:26:57,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7922a896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:26:57, skipping insertion in model container [2022-07-21 04:26:57,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:26:56" (2/3) ... [2022-07-21 04:26:57,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7922a896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:26:57, skipping insertion in model container [2022-07-21 04:26:57,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:26:57" (3/3) ... [2022-07-21 04:26:57,980 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2022-07-21 04:26:57,991 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:26:57,992 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:26:58,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:26:58,063 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@1d3a4ec2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d199f95 [2022-07-21 04:26:58,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:26:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 426 states have (on average 1.6948356807511737) internal successors, (722), 447 states have internal predecessors, (722), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2022-07-21 04:26:58,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 04:26:58,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:26:58,103 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] [2022-07-21 04:26:58,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:26:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:26:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1217975181, now seen corresponding path program 1 times [2022-07-21 04:26:58,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:26:58,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366085138] [2022-07-21 04:26:58,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:26:58,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:26:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:26:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:26:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 04:26:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:26:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:26:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:26:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:26:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:26:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:26:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:26:58,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:26:58,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366085138] [2022-07-21 04:26:58,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366085138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:26:58,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:26:58,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:26:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777259859] [2022-07-21 04:26:58,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:26:58,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:26:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:26:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:26:58,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:26:58,921 INFO L87 Difference]: Start difference. First operand has 545 states, 426 states have (on average 1.6948356807511737) internal successors, (722), 447 states have internal predecessors, (722), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:02,653 INFO L93 Difference]: Finished difference Result 1329 states and 2269 transitions. [2022-07-21 04:27:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:27:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-07-21 04:27:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:02,679 INFO L225 Difference]: With dead ends: 1329 [2022-07-21 04:27:02,679 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 04:27:02,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:27:02,691 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1791 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:02,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 2252 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-21 04:27:02,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 04:27:02,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-21 04:27:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6904761904761905) internal successors, (710), 439 states have internal predecessors, (710), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 893 transitions. [2022-07-21 04:27:02,868 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 893 transitions. Word has length 102 [2022-07-21 04:27:02,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:02,869 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 893 transitions. [2022-07-21 04:27:02,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 893 transitions. [2022-07-21 04:27:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-21 04:27:02,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:02,875 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] [2022-07-21 04:27:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 04:27:02,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:02,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash -493393200, now seen corresponding path program 1 times [2022-07-21 04:27:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:02,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904562642] [2022-07-21 04:27:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:02,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 04:27:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:03,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:03,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904562642] [2022-07-21 04:27:03,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904562642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:03,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:03,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:03,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153316911] [2022-07-21 04:27:03,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:03,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:03,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:03,175 INFO L87 Difference]: Start difference. First operand 537 states and 893 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:07,238 INFO L93 Difference]: Finished difference Result 1315 states and 2231 transitions. [2022-07-21 04:27:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:27:07,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-21 04:27:07,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:07,244 INFO L225 Difference]: With dead ends: 1315 [2022-07-21 04:27:07,244 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 04:27:07,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:27:07,247 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 933 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:07,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 2370 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2585 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-21 04:27:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 04:27:07,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-21 04:27:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.688095238095238) internal successors, (709), 439 states have internal predecessors, (709), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 892 transitions. [2022-07-21 04:27:07,302 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 892 transitions. Word has length 105 [2022-07-21 04:27:07,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:07,302 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 892 transitions. [2022-07-21 04:27:07,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:07,302 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 892 transitions. [2022-07-21 04:27:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 04:27:07,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:07,305 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] [2022-07-21 04:27:07,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 04:27:07,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:07,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:07,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1657049085, now seen corresponding path program 1 times [2022-07-21 04:27:07,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:07,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363152404] [2022-07-21 04:27:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:07,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:27:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:27:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:07,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:07,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363152404] [2022-07-21 04:27:07,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363152404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:07,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:07,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:07,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018893520] [2022-07-21 04:27:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:07,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:07,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:07,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:07,634 INFO L87 Difference]: Start difference. First operand 537 states and 892 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:11,272 INFO L93 Difference]: Finished difference Result 1315 states and 2230 transitions. [2022-07-21 04:27:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:27:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-07-21 04:27:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:11,277 INFO L225 Difference]: With dead ends: 1315 [2022-07-21 04:27:11,277 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 04:27:11,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:27:11,283 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1358 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2279 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:11,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2279 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 04:27:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 04:27:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-21 04:27:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6857142857142857) internal successors, (708), 439 states have internal predecessors, (708), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 891 transitions. [2022-07-21 04:27:11,325 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 891 transitions. Word has length 106 [2022-07-21 04:27:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:11,326 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 891 transitions. [2022-07-21 04:27:11,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 891 transitions. [2022-07-21 04:27:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-21 04:27:11,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:11,328 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] [2022-07-21 04:27:11,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 04:27:11,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:11,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash -455717396, now seen corresponding path program 1 times [2022-07-21 04:27:11,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:11,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686907745] [2022-07-21 04:27:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:11,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 04:27:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:27:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:11,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:11,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686907745] [2022-07-21 04:27:11,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686907745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:11,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:11,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:11,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988186433] [2022-07-21 04:27:11,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:11,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:11,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:11,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:11,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:11,634 INFO L87 Difference]: Start difference. First operand 537 states and 891 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:15,105 INFO L93 Difference]: Finished difference Result 1315 states and 2229 transitions. [2022-07-21 04:27:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:27:15,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-07-21 04:27:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:15,109 INFO L225 Difference]: With dead ends: 1315 [2022-07-21 04:27:15,109 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 04:27:15,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:27:15,112 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 1766 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:15,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 2234 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 04:27:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 04:27:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-21 04:27:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6833333333333333) internal successors, (707), 439 states have internal predecessors, (707), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 890 transitions. [2022-07-21 04:27:15,150 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 890 transitions. Word has length 107 [2022-07-21 04:27:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:15,150 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 890 transitions. [2022-07-21 04:27:15,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 890 transitions. [2022-07-21 04:27:15,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 04:27:15,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:15,152 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] [2022-07-21 04:27:15,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 04:27:15,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:15,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:15,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1583969447, now seen corresponding path program 1 times [2022-07-21 04:27:15,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:15,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971050413] [2022-07-21 04:27:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:15,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 04:27:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:27:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:15,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:15,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971050413] [2022-07-21 04:27:15,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971050413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:15,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:15,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:15,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004141617] [2022-07-21 04:27:15,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:15,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:15,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:15,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:15,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:15,432 INFO L87 Difference]: Start difference. First operand 537 states and 890 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:19,015 INFO L93 Difference]: Finished difference Result 1315 states and 2228 transitions. [2022-07-21 04:27:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:27:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-07-21 04:27:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:19,019 INFO L225 Difference]: With dead ends: 1315 [2022-07-21 04:27:19,019 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 04:27:19,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:27:19,023 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 1765 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:19,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 2232 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-21 04:27:19,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 04:27:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-21 04:27:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.680952380952381) internal successors, (706), 439 states have internal predecessors, (706), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 889 transitions. [2022-07-21 04:27:19,069 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 889 transitions. Word has length 108 [2022-07-21 04:27:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:19,070 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 889 transitions. [2022-07-21 04:27:19,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 889 transitions. [2022-07-21 04:27:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 04:27:19,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:19,072 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] [2022-07-21 04:27:19,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 04:27:19,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:19,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2037922056, now seen corresponding path program 1 times [2022-07-21 04:27:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:19,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699415268] [2022-07-21 04:27:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:27:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:19,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:19,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699415268] [2022-07-21 04:27:19,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699415268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:19,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:19,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:19,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119401112] [2022-07-21 04:27:19,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:19,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:19,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:19,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:19,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:19,363 INFO L87 Difference]: Start difference. First operand 537 states and 889 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:23,126 INFO L93 Difference]: Finished difference Result 1275 states and 2152 transitions. [2022-07-21 04:27:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:27:23,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-07-21 04:27:23,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:23,145 INFO L225 Difference]: With dead ends: 1275 [2022-07-21 04:27:23,145 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 04:27:23,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:27:23,150 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 973 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:23,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 2306 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-21 04:27:23,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 04:27:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-21 04:27:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6690476190476191) internal successors, (701), 439 states have internal predecessors, (701), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 884 transitions. [2022-07-21 04:27:23,206 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 884 transitions. Word has length 109 [2022-07-21 04:27:23,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:23,206 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 884 transitions. [2022-07-21 04:27:23,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 884 transitions. [2022-07-21 04:27:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 04:27:23,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:23,211 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] [2022-07-21 04:27:23,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:27:23,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:23,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:23,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1361119109, now seen corresponding path program 1 times [2022-07-21 04:27:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:23,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590051287] [2022-07-21 04:27:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:23,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 04:27:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:23,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:23,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590051287] [2022-07-21 04:27:23,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590051287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:23,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:23,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034716720] [2022-07-21 04:27:23,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:23,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:23,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:23,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:23,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:23,518 INFO L87 Difference]: Start difference. First operand 537 states and 884 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:27,002 INFO L93 Difference]: Finished difference Result 1275 states and 2147 transitions. [2022-07-21 04:27:27,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:27:27,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-07-21 04:27:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:27,019 INFO L225 Difference]: With dead ends: 1275 [2022-07-21 04:27:27,019 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 04:27:27,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:27:27,038 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 972 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:27,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 2299 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 04:27:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 04:27:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-21 04:27:27,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6571428571428573) internal successors, (696), 439 states have internal predecessors, (696), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 879 transitions. [2022-07-21 04:27:27,091 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 879 transitions. Word has length 110 [2022-07-21 04:27:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:27,092 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 879 transitions. [2022-07-21 04:27:27,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 879 transitions. [2022-07-21 04:27:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-21 04:27:27,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:27,095 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] [2022-07-21 04:27:27,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:27:27,095 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:27,096 INFO L85 PathProgramCache]: Analyzing trace with hash 103820333, now seen corresponding path program 1 times [2022-07-21 04:27:27,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:27,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204438873] [2022-07-21 04:27:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:27,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 04:27:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:27,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:27,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204438873] [2022-07-21 04:27:27,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204438873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:27,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:27,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:27,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998174740] [2022-07-21 04:27:27,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:27,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:27,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:27,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:27,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:27,372 INFO L87 Difference]: Start difference. First operand 537 states and 879 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:30,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:30,629 INFO L93 Difference]: Finished difference Result 1275 states and 2142 transitions. [2022-07-21 04:27:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:27:30,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-07-21 04:27:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:30,633 INFO L225 Difference]: With dead ends: 1275 [2022-07-21 04:27:30,633 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 04:27:30,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:27:30,635 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 971 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:30,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 2291 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2509 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 04:27:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 04:27:30,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-21 04:27:30,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6452380952380952) internal successors, (691), 439 states have internal predecessors, (691), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 874 transitions. [2022-07-21 04:27:30,681 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 874 transitions. Word has length 111 [2022-07-21 04:27:30,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:30,682 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 874 transitions. [2022-07-21 04:27:30,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 874 transitions. [2022-07-21 04:27:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 04:27:30,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:30,685 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] [2022-07-21 04:27:30,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:27:30,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:30,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1968979958, now seen corresponding path program 1 times [2022-07-21 04:27:30,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:30,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056283830] [2022-07-21 04:27:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:27:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:31,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:31,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:31,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056283830] [2022-07-21 04:27:31,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056283830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:31,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:31,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:31,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854203636] [2022-07-21 04:27:31,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:31,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:31,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:31,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:31,022 INFO L87 Difference]: Start difference. First operand 537 states and 874 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:34,389 INFO L93 Difference]: Finished difference Result 1275 states and 2137 transitions. [2022-07-21 04:27:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:27:34,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-21 04:27:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:34,419 INFO L225 Difference]: With dead ends: 1275 [2022-07-21 04:27:34,419 INFO L226 Difference]: Without dead ends: 796 [2022-07-21 04:27:34,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:27:34,422 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 986 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:34,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 2303 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 04:27:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-07-21 04:27:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-07-21 04:27:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6333333333333333) internal successors, (686), 439 states have internal predecessors, (686), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:34,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 869 transitions. [2022-07-21 04:27:34,468 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 869 transitions. Word has length 112 [2022-07-21 04:27:34,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:34,468 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 869 transitions. [2022-07-21 04:27:34,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 869 transitions. [2022-07-21 04:27:34,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 04:27:34,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:34,471 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] [2022-07-21 04:27:34,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:27:34,472 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:34,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1329589909, now seen corresponding path program 1 times [2022-07-21 04:27:34,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:34,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142146302] [2022-07-21 04:27:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:34,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:27:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:34,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:34,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142146302] [2022-07-21 04:27:34,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142146302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:34,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:34,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:34,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476554007] [2022-07-21 04:27:34,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:34,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:34,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:34,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:34,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:34,750 INFO L87 Difference]: Start difference. First operand 537 states and 869 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:39,085 INFO L93 Difference]: Finished difference Result 1290 states and 2152 transitions. [2022-07-21 04:27:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:27:39,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-07-21 04:27:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:39,090 INFO L225 Difference]: With dead ends: 1290 [2022-07-21 04:27:39,090 INFO L226 Difference]: Without dead ends: 817 [2022-07-21 04:27:39,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:27:39,092 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 975 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:39,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 2322 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 2477 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-21 04:27:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-07-21 04:27:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 539. [2022-07-21 04:27:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6303317535545023) internal successors, (688), 441 states have internal predecessors, (688), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 871 transitions. [2022-07-21 04:27:39,151 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 871 transitions. Word has length 112 [2022-07-21 04:27:39,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:39,151 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 871 transitions. [2022-07-21 04:27:39,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 871 transitions. [2022-07-21 04:27:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 04:27:39,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:39,153 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] [2022-07-21 04:27:39,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 04:27:39,154 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash 742443858, now seen corresponding path program 1 times [2022-07-21 04:27:39,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:39,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115556911] [2022-07-21 04:27:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:39,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:27:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:39,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:39,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115556911] [2022-07-21 04:27:39,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115556911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:39,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:39,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:39,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899636583] [2022-07-21 04:27:39,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:39,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:39,445 INFO L87 Difference]: Start difference. First operand 539 states and 871 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:42,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:42,703 INFO L93 Difference]: Finished difference Result 1281 states and 2138 transitions. [2022-07-21 04:27:42,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:27:42,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-21 04:27:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:42,708 INFO L225 Difference]: With dead ends: 1281 [2022-07-21 04:27:42,708 INFO L226 Difference]: Without dead ends: 800 [2022-07-21 04:27:42,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:27:42,709 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 983 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 2747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:42,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2303 Invalid, 2747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 04:27:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-07-21 04:27:42,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 539. [2022-07-21 04:27:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6184834123222749) internal successors, (683), 441 states have internal predecessors, (683), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 866 transitions. [2022-07-21 04:27:42,757 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 866 transitions. Word has length 113 [2022-07-21 04:27:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:42,757 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 866 transitions. [2022-07-21 04:27:42,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 866 transitions. [2022-07-21 04:27:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-21 04:27:42,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:42,760 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] [2022-07-21 04:27:42,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 04:27:42,760 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1641457, now seen corresponding path program 1 times [2022-07-21 04:27:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:42,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601072788] [2022-07-21 04:27:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:27:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:43,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:43,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601072788] [2022-07-21 04:27:43,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601072788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:43,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:43,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:43,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451067477] [2022-07-21 04:27:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:43,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:43,004 INFO L87 Difference]: Start difference. First operand 539 states and 866 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:46,893 INFO L93 Difference]: Finished difference Result 1294 states and 2149 transitions. [2022-07-21 04:27:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:27:46,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-21 04:27:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:46,897 INFO L225 Difference]: With dead ends: 1294 [2022-07-21 04:27:46,897 INFO L226 Difference]: Without dead ends: 821 [2022-07-21 04:27:46,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:27:46,899 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 1824 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:46,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 2205 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 04:27:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-07-21 04:27:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 542. [2022-07-21 04:27:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 425 states have (on average 1.6141176470588234) internal successors, (686), 444 states have internal predecessors, (686), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 869 transitions. [2022-07-21 04:27:46,987 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 869 transitions. Word has length 113 [2022-07-21 04:27:46,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:46,988 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 869 transitions. [2022-07-21 04:27:46,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 869 transitions. [2022-07-21 04:27:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:27:46,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:46,990 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] [2022-07-21 04:27:46,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:27:46,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:46,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1440959631, now seen corresponding path program 1 times [2022-07-21 04:27:46,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:46,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763671157] [2022-07-21 04:27:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:46,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:27:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:47,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:47,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763671157] [2022-07-21 04:27:47,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763671157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:47,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:47,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 04:27:47,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751096943] [2022-07-21 04:27:47,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:47,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:27:47,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:47,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:27:47,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:27:47,321 INFO L87 Difference]: Start difference. First operand 542 states and 869 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:27:51,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:51,375 INFO L93 Difference]: Finished difference Result 1298 states and 2155 transitions. [2022-07-21 04:27:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:27:51,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-07-21 04:27:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:51,381 INFO L225 Difference]: With dead ends: 1298 [2022-07-21 04:27:51,381 INFO L226 Difference]: Without dead ends: 828 [2022-07-21 04:27:51,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:27:51,384 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 1843 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 4525 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 5111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 4525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:51,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 3635 Invalid, 5111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [586 Valid, 4525 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 04:27:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-07-21 04:27:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 553. [2022-07-21 04:27:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 433 states have (on average 1.6096997690531178) internal successors, (697), 454 states have internal predecessors, (697), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-07-21 04:27:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 884 transitions. [2022-07-21 04:27:51,467 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 884 transitions. Word has length 114 [2022-07-21 04:27:51,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:51,467 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 884 transitions. [2022-07-21 04:27:51,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:27:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 884 transitions. [2022-07-21 04:27:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:27:51,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:51,471 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] [2022-07-21 04:27:51,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 04:27:51,471 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash -620255568, now seen corresponding path program 1 times [2022-07-21 04:27:51,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:51,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743179932] [2022-07-21 04:27:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:51,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:27:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:51,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:51,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743179932] [2022-07-21 04:27:51,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743179932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:51,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:51,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:51,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619989313] [2022-07-21 04:27:51,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:51,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:51,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:51,784 INFO L87 Difference]: Start difference. First operand 553 states and 884 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:55,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:55,235 INFO L93 Difference]: Finished difference Result 1321 states and 2186 transitions. [2022-07-21 04:27:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:27:55,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-21 04:27:55,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:55,240 INFO L225 Difference]: With dead ends: 1321 [2022-07-21 04:27:55,240 INFO L226 Difference]: Without dead ends: 845 [2022-07-21 04:27:55,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:27:55,242 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 1832 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:55,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 2175 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 04:27:55,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-07-21 04:27:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 557. [2022-07-21 04:27:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 437 states have (on average 1.6018306636155606) internal successors, (700), 458 states have internal predecessors, (700), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-07-21 04:27:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 887 transitions. [2022-07-21 04:27:55,301 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 887 transitions. Word has length 114 [2022-07-21 04:27:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:55,302 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 887 transitions. [2022-07-21 04:27:55,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 887 transitions. [2022-07-21 04:27:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:27:55,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:55,304 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] [2022-07-21 04:27:55,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 04:27:55,304 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2053472112, now seen corresponding path program 1 times [2022-07-21 04:27:55,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:55,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873120379] [2022-07-21 04:27:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:55,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:27:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:55,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:55,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873120379] [2022-07-21 04:27:55,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873120379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:55,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:55,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:55,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402517465] [2022-07-21 04:27:55,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:55,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:55,521 INFO L87 Difference]: Start difference. First operand 557 states and 887 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:27:59,040 INFO L93 Difference]: Finished difference Result 1363 states and 2229 transitions. [2022-07-21 04:27:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:27:59,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-07-21 04:27:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:27:59,044 INFO L225 Difference]: With dead ends: 1363 [2022-07-21 04:27:59,055 INFO L226 Difference]: Without dead ends: 804 [2022-07-21 04:27:59,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:27:59,059 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 1733 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:27:59,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 2212 Invalid, 2778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 04:27:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-07-21 04:27:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 538. [2022-07-21 04:27:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 421 states have (on average 1.6104513064133017) internal successors, (678), 440 states have internal predecessors, (678), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:27:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 861 transitions. [2022-07-21 04:27:59,174 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 861 transitions. Word has length 114 [2022-07-21 04:27:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:27:59,175 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 861 transitions. [2022-07-21 04:27:59,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:27:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 861 transitions. [2022-07-21 04:27:59,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 04:27:59,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:27:59,177 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] [2022-07-21 04:27:59,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:27:59,177 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:27:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:27:59,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1452766988, now seen corresponding path program 1 times [2022-07-21 04:27:59,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:27:59,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285415987] [2022-07-21 04:27:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:27:59,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:27:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:27:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:27:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:27:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:27:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:27:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:27:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:27:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:27:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:27:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:27:59,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:27:59,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285415987] [2022-07-21 04:27:59,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285415987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:27:59,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:27:59,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:27:59,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882269656] [2022-07-21 04:27:59,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:27:59,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:27:59,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:27:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:27:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:27:59,527 INFO L87 Difference]: Start difference. First operand 538 states and 861 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:28:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:03,575 INFO L93 Difference]: Finished difference Result 1298 states and 2144 transitions. [2022-07-21 04:28:03,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:28:03,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-07-21 04:28:03,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:03,579 INFO L225 Difference]: With dead ends: 1298 [2022-07-21 04:28:03,579 INFO L226 Difference]: Without dead ends: 825 [2022-07-21 04:28:03,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:28:03,581 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 952 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:03,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 2315 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-21 04:28:03,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-07-21 04:28:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 543. [2022-07-21 04:28:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 426 states have (on average 1.6032863849765258) internal successors, (683), 445 states have internal predecessors, (683), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-07-21 04:28:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 866 transitions. [2022-07-21 04:28:03,642 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 866 transitions. Word has length 115 [2022-07-21 04:28:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:03,643 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 866 transitions. [2022-07-21 04:28:03,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:28:03,643 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 866 transitions. [2022-07-21 04:28:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 04:28:03,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:03,645 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] [2022-07-21 04:28:03,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:28:03,645 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:03,646 INFO L85 PathProgramCache]: Analyzing trace with hash -565790203, now seen corresponding path program 1 times [2022-07-21 04:28:03,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:03,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916166238] [2022-07-21 04:28:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:03,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:28:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:28:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:28:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:28:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:03,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:28:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:28:04,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:04,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916166238] [2022-07-21 04:28:04,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916166238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:04,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:04,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 04:28:04,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37648790] [2022-07-21 04:28:04,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:04,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 04:28:04,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:04,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 04:28:04,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:28:04,003 INFO L87 Difference]: Start difference. First operand 543 states and 866 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:28:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:11,837 INFO L93 Difference]: Finished difference Result 1551 states and 2689 transitions. [2022-07-21 04:28:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 04:28:11,837 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-07-21 04:28:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:11,842 INFO L225 Difference]: With dead ends: 1551 [2022-07-21 04:28:11,842 INFO L226 Difference]: Without dead ends: 1086 [2022-07-21 04:28:11,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-07-21 04:28:11,844 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 2977 mSDsluCounter, 3626 mSDsCounter, 0 mSdLazyCounter, 9943 mSolverCounterSat, 1606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2977 SdHoareTripleChecker+Valid, 4631 SdHoareTripleChecker+Invalid, 11549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1606 IncrementalHoareTripleChecker+Valid, 9943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:11,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2977 Valid, 4631 Invalid, 11549 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1606 Valid, 9943 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-21 04:28:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-07-21 04:28:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 552. [2022-07-21 04:28:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 433 states have (on average 1.5935334872979214) internal successors, (690), 451 states have internal predecessors, (690), 94 states have call successors, (94), 23 states have call predecessors, (94), 24 states have return successors, (108), 90 states have call predecessors, (108), 89 states have call successors, (108) [2022-07-21 04:28:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 892 transitions. [2022-07-21 04:28:11,915 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 892 transitions. Word has length 116 [2022-07-21 04:28:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:11,916 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 892 transitions. [2022-07-21 04:28:11,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:28:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 892 transitions. [2022-07-21 04:28:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 04:28:11,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:11,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:11,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:28:11,918 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash -182072457, now seen corresponding path program 1 times [2022-07-21 04:28:11,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:11,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933569347] [2022-07-21 04:28:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:11,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:28:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:28:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 04:28:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 04:28:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:28:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 04:28:12,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:12,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933569347] [2022-07-21 04:28:12,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933569347] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:28:12,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041988382] [2022-07-21 04:28:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:12,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:28:12,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:28:12,284 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) [2022-07-21 04:28:12,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:28:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:12,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:28:12,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:28:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:28:12,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:28:12,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041988382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:12,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:28:12,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-21 04:28:12,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231833862] [2022-07-21 04:28:12,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:12,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:28:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:28:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:28:12,555 INFO L87 Difference]: Start difference. First operand 552 states and 892 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:28:12,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:12,714 INFO L93 Difference]: Finished difference Result 1495 states and 2503 transitions. [2022-07-21 04:28:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:28:12,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2022-07-21 04:28:12,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:12,719 INFO L225 Difference]: With dead ends: 1495 [2022-07-21 04:28:12,719 INFO L226 Difference]: Without dead ends: 1021 [2022-07-21 04:28:12,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:28:12,721 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 769 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:12,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 2353 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:28:12,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-07-21 04:28:12,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1001. [2022-07-21 04:28:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 782 states have (on average 1.6317135549872124) internal successors, (1276), 812 states have internal predecessors, (1276), 174 states have call successors, (174), 40 states have call predecessors, (174), 44 states have return successors, (213), 174 states have call predecessors, (213), 169 states have call successors, (213) [2022-07-21 04:28:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1663 transitions. [2022-07-21 04:28:12,846 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1663 transitions. Word has length 117 [2022-07-21 04:28:12,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:12,846 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1663 transitions. [2022-07-21 04:28:12,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:28:12,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1663 transitions. [2022-07-21 04:28:12,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 04:28:12,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:12,848 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:12,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 04:28:13,069 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 [2022-07-21 04:28:13,069 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:13,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:13,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1741155577, now seen corresponding path program 1 times [2022-07-21 04:28:13,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:13,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626370211] [2022-07-21 04:28:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:13,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:28:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:28:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 04:28:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 04:28:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:28:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 04:28:13,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:13,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626370211] [2022-07-21 04:28:13,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626370211] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:28:13,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930560674] [2022-07-21 04:28:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:13,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:28:13,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:28:13,430 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) [2022-07-21 04:28:13,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:28:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:13,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:28:13,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:28:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:28:13,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:28:13,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930560674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:13,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:28:13,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-07-21 04:28:13,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410785075] [2022-07-21 04:28:13,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:13,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:28:13,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:13,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:28:13,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:28:13,776 INFO L87 Difference]: Start difference. First operand 1001 states and 1663 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:28:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:14,191 INFO L93 Difference]: Finished difference Result 1944 states and 3322 transitions. [2022-07-21 04:28:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:28:14,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-07-21 04:28:14,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:14,196 INFO L225 Difference]: With dead ends: 1944 [2022-07-21 04:28:14,196 INFO L226 Difference]: Without dead ends: 1021 [2022-07-21 04:28:14,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:28:14,199 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 795 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:14,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 2135 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:28:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-07-21 04:28:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1017. [2022-07-21 04:28:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 796 states have (on average 1.6331658291457287) internal successors, (1300), 826 states have internal predecessors, (1300), 174 states have call successors, (174), 42 states have call predecessors, (174), 46 states have return successors, (203), 174 states have call predecessors, (203), 169 states have call successors, (203) [2022-07-21 04:28:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1677 transitions. [2022-07-21 04:28:14,343 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1677 transitions. Word has length 117 [2022-07-21 04:28:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:14,343 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1677 transitions. [2022-07-21 04:28:14,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:28:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1677 transitions. [2022-07-21 04:28:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 04:28:14,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:14,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:14,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:28:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:28:14,563 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash 599562823, now seen corresponding path program 1 times [2022-07-21 04:28:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:14,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216804107] [2022-07-21 04:28:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:28:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:28:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:28:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:28:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:28:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 04:28:14,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:14,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216804107] [2022-07-21 04:28:14,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216804107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:14,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:14,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 04:28:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463876820] [2022-07-21 04:28:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:14,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 04:28:14,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 04:28:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:28:14,897 INFO L87 Difference]: Start difference. First operand 1017 states and 1677 transitions. Second operand has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:28:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:31,454 INFO L93 Difference]: Finished difference Result 4694 states and 8477 transitions. [2022-07-21 04:28:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 04:28:31,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 120 [2022-07-21 04:28:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:31,476 INFO L225 Difference]: With dead ends: 4694 [2022-07-21 04:28:31,476 INFO L226 Difference]: Without dead ends: 3755 [2022-07-21 04:28:31,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-07-21 04:28:31,484 INFO L413 NwaCegarLoop]: 2036 mSDtfsCounter, 6270 mSDsluCounter, 8136 mSDsCounter, 0 mSdLazyCounter, 19239 mSolverCounterSat, 3397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6270 SdHoareTripleChecker+Valid, 10172 SdHoareTripleChecker+Invalid, 22636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3397 IncrementalHoareTripleChecker+Valid, 19239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:31,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6270 Valid, 10172 Invalid, 22636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3397 Valid, 19239 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2022-07-21 04:28:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2022-07-21 04:28:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 2674. [2022-07-21 04:28:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 1955 states have (on average 1.621994884910486) internal successors, (3171), 2064 states have internal predecessors, (3171), 606 states have call successors, (606), 80 states have call predecessors, (606), 112 states have return successors, (828), 621 states have call predecessors, (828), 601 states have call successors, (828) [2022-07-21 04:28:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4605 transitions. [2022-07-21 04:28:32,068 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4605 transitions. Word has length 120 [2022-07-21 04:28:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:32,068 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4605 transitions. [2022-07-21 04:28:32,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:28:32,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4605 transitions. [2022-07-21 04:28:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-21 04:28:32,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:32,073 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] [2022-07-21 04:28:32,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:28:32,073 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1053508409, now seen corresponding path program 1 times [2022-07-21 04:28:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:32,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621936169] [2022-07-21 04:28:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:28:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 04:28:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:28:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:28:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:28:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:28:32,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:32,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621936169] [2022-07-21 04:28:32,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621936169] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:28:32,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514413999] [2022-07-21 04:28:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:32,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:28:32,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:28:32,437 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) [2022-07-21 04:28:32,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:28:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:32,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:28:32,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:28:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:28:32,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:28:32,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514413999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:32,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:28:32,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-07-21 04:28:32,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266869581] [2022-07-21 04:28:32,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:32,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:28:32,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:32,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:28:32,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:28:32,759 INFO L87 Difference]: Start difference. First operand 2674 states and 4605 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:28:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:33,623 INFO L93 Difference]: Finished difference Result 5288 states and 9234 transitions. [2022-07-21 04:28:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:28:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-07-21 04:28:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:33,635 INFO L225 Difference]: With dead ends: 5288 [2022-07-21 04:28:33,635 INFO L226 Difference]: Without dead ends: 2700 [2022-07-21 04:28:33,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:28:33,649 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 808 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:33,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 2135 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:28:33,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2022-07-21 04:28:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2692. [2022-07-21 04:28:34,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 1971 states have (on average 1.6270928462709284) internal successors, (3207), 2084 states have internal predecessors, (3207), 606 states have call successors, (606), 84 states have call predecessors, (606), 114 states have return successors, (790), 615 states have call predecessors, (790), 601 states have call successors, (790) [2022-07-21 04:28:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4603 transitions. [2022-07-21 04:28:34,167 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4603 transitions. Word has length 121 [2022-07-21 04:28:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:34,167 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4603 transitions. [2022-07-21 04:28:34,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 04:28:34,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4603 transitions. [2022-07-21 04:28:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 04:28:34,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:34,171 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:28:34,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:28:34,387 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 [2022-07-21 04:28:34,387 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1822492423, now seen corresponding path program 1 times [2022-07-21 04:28:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:34,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089308527] [2022-07-21 04:28:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:34,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:28:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:28:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:28:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:28:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:28:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:28:34,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:34,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089308527] [2022-07-21 04:28:34,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089308527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:34,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:34,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 04:28:34,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542897461] [2022-07-21 04:28:34,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:34,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 04:28:34,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:34,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 04:28:34,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:28:34,804 INFO L87 Difference]: Start difference. First operand 2692 states and 4603 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 04:28:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:49,894 INFO L93 Difference]: Finished difference Result 8967 states and 16667 transitions. [2022-07-21 04:28:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-21 04:28:49,895 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 124 [2022-07-21 04:28:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:49,933 INFO L225 Difference]: With dead ends: 8967 [2022-07-21 04:28:49,933 INFO L226 Difference]: Without dead ends: 6361 [2022-07-21 04:28:49,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-07-21 04:28:49,954 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 6450 mSDsluCounter, 7329 mSDsCounter, 0 mSdLazyCounter, 18506 mSolverCounterSat, 3161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6456 SdHoareTripleChecker+Valid, 9230 SdHoareTripleChecker+Invalid, 21667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3161 IncrementalHoareTripleChecker+Valid, 18506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:49,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6456 Valid, 9230 Invalid, 21667 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3161 Valid, 18506 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-07-21 04:28:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2022-07-21 04:28:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 4205. [2022-07-21 04:28:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 3087 states have (on average 1.6277939747327503) internal successors, (5025), 3244 states have internal predecessors, (5025), 938 states have call successors, (938), 124 states have call predecessors, (938), 179 states have return successors, (1417), 958 states have call predecessors, (1417), 933 states have call successors, (1417) [2022-07-21 04:28:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 7380 transitions. [2022-07-21 04:28:51,015 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 7380 transitions. Word has length 124 [2022-07-21 04:28:51,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:51,016 INFO L495 AbstractCegarLoop]: Abstraction has 4205 states and 7380 transitions. [2022-07-21 04:28:51,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 04:28:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 7380 transitions. [2022-07-21 04:28:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 04:28:51,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:51,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:51,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 04:28:51,022 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:51,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:51,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1287382378, now seen corresponding path program 1 times [2022-07-21 04:28:51,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:51,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351270056] [2022-07-21 04:28:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:51,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:28:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:28:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:28:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:28:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:28:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:28:51,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:51,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351270056] [2022-07-21 04:28:51,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351270056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:51,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:51,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:28:51,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440470891] [2022-07-21 04:28:51,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:51,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:28:51,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:28:51,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:28:51,290 INFO L87 Difference]: Start difference. First operand 4205 states and 7380 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:28:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:55,750 INFO L93 Difference]: Finished difference Result 7882 states and 14172 transitions. [2022-07-21 04:28:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:28:55,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-07-21 04:28:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:55,782 INFO L225 Difference]: With dead ends: 7882 [2022-07-21 04:28:55,783 INFO L226 Difference]: Without dead ends: 5174 [2022-07-21 04:28:55,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:28:55,793 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 1341 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:55,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2335 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 04:28:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5174 states. [2022-07-21 04:28:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5174 to 4211. [2022-07-21 04:28:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 3093 states have (on average 1.6265761396702232) internal successors, (5031), 3250 states have internal predecessors, (5031), 938 states have call successors, (938), 124 states have call predecessors, (938), 179 states have return successors, (1417), 958 states have call predecessors, (1417), 933 states have call successors, (1417) [2022-07-21 04:28:56,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 7386 transitions. [2022-07-21 04:28:56,702 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 7386 transitions. Word has length 124 [2022-07-21 04:28:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:56,702 INFO L495 AbstractCegarLoop]: Abstraction has 4211 states and 7386 transitions. [2022-07-21 04:28:56,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 04:28:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 7386 transitions. [2022-07-21 04:28:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 04:28:56,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:56,707 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:28:56,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 04:28:56,708 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:56,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1954972024, now seen corresponding path program 1 times [2022-07-21 04:28:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:56,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338822367] [2022-07-21 04:28:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:28:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:28:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:28:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:28:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:28:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:28:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:28:57,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:57,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338822367] [2022-07-21 04:28:57,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338822367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:57,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:57,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 04:28:57,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246862110] [2022-07-21 04:28:57,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:57,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:28:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:28:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:28:57,005 INFO L87 Difference]: Start difference. First operand 4211 states and 7386 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:29:04,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:04,453 INFO L93 Difference]: Finished difference Result 11175 states and 20663 transitions. [2022-07-21 04:29:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 04:29:04,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 130 [2022-07-21 04:29:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:04,508 INFO L225 Difference]: With dead ends: 11175 [2022-07-21 04:29:04,527 INFO L226 Difference]: Without dead ends: 7068 [2022-07-21 04:29:04,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2022-07-21 04:29:04,556 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 1913 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 4694 mSolverCounterSat, 990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 4400 SdHoareTripleChecker+Invalid, 5684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 4694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:04,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 4400 Invalid, 5684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 4694 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-21 04:29:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2022-07-21 04:29:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 4241. [2022-07-21 04:29:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4241 states, 3117 states have (on average 1.6217516843118382) internal successors, (5055), 3274 states have internal predecessors, (5055), 938 states have call successors, (938), 124 states have call predecessors, (938), 185 states have return successors, (1425), 964 states have call predecessors, (1425), 933 states have call successors, (1425) [2022-07-21 04:29:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 7418 transitions. [2022-07-21 04:29:05,540 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 7418 transitions. Word has length 130 [2022-07-21 04:29:05,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:05,540 INFO L495 AbstractCegarLoop]: Abstraction has 4241 states and 7418 transitions. [2022-07-21 04:29:05,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 6 states have internal predecessors, (89), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 04:29:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 7418 transitions. [2022-07-21 04:29:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 04:29:05,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:05,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:05,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 04:29:05,546 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash -934508158, now seen corresponding path program 1 times [2022-07-21 04:29:05,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:05,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360929307] [2022-07-21 04:29:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:05,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:29:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:29:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:29:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:29:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:29:05,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:05,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360929307] [2022-07-21 04:29:05,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360929307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:05,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:05,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 04:29:05,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104269215] [2022-07-21 04:29:05,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:05,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:29:05,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:29:05,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:29:05,876 INFO L87 Difference]: Start difference. First operand 4241 states and 7418 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:29:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:10,919 INFO L93 Difference]: Finished difference Result 6543 states and 11728 transitions. [2022-07-21 04:29:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:29:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 130 [2022-07-21 04:29:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:10,934 INFO L225 Difference]: With dead ends: 6543 [2022-07-21 04:29:10,935 INFO L226 Difference]: Without dead ends: 3521 [2022-07-21 04:29:10,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:29:10,944 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1340 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 4473 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 4890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 4473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:10,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 3618 Invalid, 4890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 4473 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-21 04:29:10,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2022-07-21 04:29:11,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 1075. [2022-07-21 04:29:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 842 states have (on average 1.6353919239904988) internal successors, (1377), 878 states have internal predecessors, (1377), 180 states have call successors, (180), 44 states have call predecessors, (180), 52 states have return successors, (214), 176 states have call predecessors, (214), 175 states have call successors, (214) [2022-07-21 04:29:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1771 transitions. [2022-07-21 04:29:11,221 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1771 transitions. Word has length 130 [2022-07-21 04:29:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:11,221 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1771 transitions. [2022-07-21 04:29:11,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:29:11,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1771 transitions. [2022-07-21 04:29:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 04:29:11,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:11,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:29:11,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 04:29:11,223 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:11,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1211575526, now seen corresponding path program 1 times [2022-07-21 04:29:11,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:11,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000448699] [2022-07-21 04:29:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:29:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:29:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 04:29:11,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:11,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000448699] [2022-07-21 04:29:11,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000448699] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:29:11,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260508591] [2022-07-21 04:29:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:11,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:11,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:29:11,576 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) [2022-07-21 04:29:11,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:29:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:11,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:29:11,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:29:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:29:11,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:29:11,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260508591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:11,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:29:11,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-07-21 04:29:11,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303187366] [2022-07-21 04:29:11,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:11,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:29:11,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:29:11,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:11,966 INFO L87 Difference]: Start difference. First operand 1075 states and 1771 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 04:29:12,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:12,416 INFO L93 Difference]: Finished difference Result 1156 states and 1907 transitions. [2022-07-21 04:29:12,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:29:12,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 133 [2022-07-21 04:29:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:12,422 INFO L225 Difference]: With dead ends: 1156 [2022-07-21 04:29:12,422 INFO L226 Difference]: Without dead ends: 1141 [2022-07-21 04:29:12,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:12,423 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 795 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:12,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1478 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 04:29:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-07-21 04:29:12,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1081. [2022-07-21 04:29:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 848 states have (on average 1.6308962264150944) internal successors, (1383), 884 states have internal predecessors, (1383), 180 states have call successors, (180), 44 states have call predecessors, (180), 52 states have return successors, (214), 176 states have call predecessors, (214), 175 states have call successors, (214) [2022-07-21 04:29:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1777 transitions. [2022-07-21 04:29:12,704 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1777 transitions. Word has length 133 [2022-07-21 04:29:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:12,704 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1777 transitions. [2022-07-21 04:29:12,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 04:29:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1777 transitions. [2022-07-21 04:29:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 04:29:12,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:12,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:29:12,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 04:29:12,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-21 04:29:12,926 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:12,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1528372511, now seen corresponding path program 1 times [2022-07-21 04:29:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:12,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79275725] [2022-07-21 04:29:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:12,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:29:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:29:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:29:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 04:29:13,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:13,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79275725] [2022-07-21 04:29:13,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79275725] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:29:13,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883887046] [2022-07-21 04:29:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:13,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:29:13,309 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) [2022-07-21 04:29:13,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:29:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:13,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 04:29:13,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:29:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:29:13,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:29:13,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883887046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:13,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:29:13,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-07-21 04:29:13,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396696124] [2022-07-21 04:29:13,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:13,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:29:13,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:13,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:29:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:13,568 INFO L87 Difference]: Start difference. First operand 1081 states and 1777 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 04:29:13,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:13,788 INFO L93 Difference]: Finished difference Result 1100 states and 1801 transitions. [2022-07-21 04:29:13,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:29:13,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 139 [2022-07-21 04:29:13,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:13,792 INFO L225 Difference]: With dead ends: 1100 [2022-07-21 04:29:13,792 INFO L226 Difference]: Without dead ends: 1085 [2022-07-21 04:29:13,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:29:13,793 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 37 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:13,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3286 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:29:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-07-21 04:29:14,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1081. [2022-07-21 04:29:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 848 states have (on average 1.6285377358490567) internal successors, (1381), 884 states have internal predecessors, (1381), 180 states have call successors, (180), 44 states have call predecessors, (180), 52 states have return successors, (214), 176 states have call predecessors, (214), 175 states have call successors, (214) [2022-07-21 04:29:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1775 transitions. [2022-07-21 04:29:14,008 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1775 transitions. Word has length 139 [2022-07-21 04:29:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:14,008 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1775 transitions. [2022-07-21 04:29:14,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-21 04:29:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1775 transitions. [2022-07-21 04:29:14,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 04:29:14,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:14,010 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-21 04:29:14,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 04:29:14,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 04:29:14,212 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:14,212 INFO L85 PathProgramCache]: Analyzing trace with hash -106409074, now seen corresponding path program 1 times [2022-07-21 04:29:14,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:14,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359875458] [2022-07-21 04:29:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:14,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:29:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:29:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:29:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:29:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:29:14,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:14,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359875458] [2022-07-21 04:29:14,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359875458] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:29:14,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524326941] [2022-07-21 04:29:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:14,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:14,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:29:14,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:29:14,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 04:29:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:14,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:29:14,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:29:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 04:29:14,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:29:14,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524326941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:14,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:29:14,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-21 04:29:14,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527629093] [2022-07-21 04:29:14,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:14,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:29:14,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:29:14,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:29:14,918 INFO L87 Difference]: Start difference. First operand 1081 states and 1775 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:29:15,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:15,421 INFO L93 Difference]: Finished difference Result 2094 states and 3519 transitions. [2022-07-21 04:29:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:29:15,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2022-07-21 04:29:15,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:15,440 INFO L225 Difference]: With dead ends: 2094 [2022-07-21 04:29:15,441 INFO L226 Difference]: Without dead ends: 1085 [2022-07-21 04:29:15,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:15,443 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 766 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:15,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 2087 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 04:29:15,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-07-21 04:29:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1085. [2022-07-21 04:29:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 850 states have (on average 1.6223529411764706) internal successors, (1379), 888 states have internal predecessors, (1379), 180 states have call successors, (180), 44 states have call predecessors, (180), 54 states have return successors, (216), 176 states have call predecessors, (216), 175 states have call successors, (216) [2022-07-21 04:29:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1775 transitions. [2022-07-21 04:29:15,657 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1775 transitions. Word has length 150 [2022-07-21 04:29:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:15,657 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1775 transitions. [2022-07-21 04:29:15,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:29:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1775 transitions. [2022-07-21 04:29:15,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 04:29:15,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:15,660 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-21 04:29:15,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 04:29:15,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 04:29:15,875 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash -413231220, now seen corresponding path program 1 times [2022-07-21 04:29:15,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:15,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208574343] [2022-07-21 04:29:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:15,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:15,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:29:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:29:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:29:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:29:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:29:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208574343] [2022-07-21 04:29:16,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208574343] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:29:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930329834] [2022-07-21 04:29:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:16,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:16,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:29:16,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:29:16,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 04:29:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 04:29:16,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:29:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 04:29:16,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:29:16,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930329834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:16,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:29:16,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2022-07-21 04:29:16,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566883101] [2022-07-21 04:29:16,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:16,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:29:16,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:29:16,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:16,657 INFO L87 Difference]: Start difference. First operand 1085 states and 1775 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-21 04:29:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:17,872 INFO L93 Difference]: Finished difference Result 2677 states and 4401 transitions. [2022-07-21 04:29:17,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:29:17,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 150 [2022-07-21 04:29:17,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:17,879 INFO L225 Difference]: With dead ends: 2677 [2022-07-21 04:29:17,880 INFO L226 Difference]: Without dead ends: 1664 [2022-07-21 04:29:17,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:29:17,883 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1470 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1619 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:17,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 1809 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1619 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 04:29:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-07-21 04:29:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1615. [2022-07-21 04:29:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1209 states have (on average 1.5814722911497106) internal successors, (1912), 1280 states have internal predecessors, (1912), 323 states have call successors, (323), 62 states have call predecessors, (323), 82 states have return successors, (382), 320 states have call predecessors, (382), 318 states have call successors, (382) [2022-07-21 04:29:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2617 transitions. [2022-07-21 04:29:18,316 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2617 transitions. Word has length 150 [2022-07-21 04:29:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:18,316 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2617 transitions. [2022-07-21 04:29:18,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-21 04:29:18,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2617 transitions. [2022-07-21 04:29:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 04:29:18,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:18,318 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-21 04:29:18,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 04:29:18,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:18,532 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:18,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:18,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1300454066, now seen corresponding path program 1 times [2022-07-21 04:29:18,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:18,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011043648] [2022-07-21 04:29:18,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:18,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:29:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:29:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:29:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:29:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:29:18,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:18,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011043648] [2022-07-21 04:29:18,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011043648] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:29:18,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496039161] [2022-07-21 04:29:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:18,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:18,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:29:18,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:29:18,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 04:29:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:19,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 04:29:19,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:29:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:29:19,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:29:19,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496039161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:19,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:29:19,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2022-07-21 04:29:19,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424118200] [2022-07-21 04:29:19,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:19,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:29:19,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:29:19,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:29:19,251 INFO L87 Difference]: Start difference. First operand 1615 states and 2617 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-21 04:29:21,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:21,891 INFO L93 Difference]: Finished difference Result 3609 states and 5940 transitions. [2022-07-21 04:29:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 04:29:21,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 150 [2022-07-21 04:29:21,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:21,897 INFO L225 Difference]: With dead ends: 3609 [2022-07-21 04:29:21,897 INFO L226 Difference]: Without dead ends: 2068 [2022-07-21 04:29:21,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2022-07-21 04:29:21,901 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 2843 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2919 SdHoareTripleChecker+Valid, 3500 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:21,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2919 Valid, 3500 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 3688 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 04:29:21,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2022-07-21 04:29:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1917. [2022-07-21 04:29:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1440 states have (on average 1.5868055555555556) internal successors, (2285), 1522 states have internal predecessors, (2285), 379 states have call successors, (379), 70 states have call predecessors, (379), 97 states have return successors, (458), 372 states have call predecessors, (458), 374 states have call successors, (458) [2022-07-21 04:29:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3122 transitions. [2022-07-21 04:29:22,400 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3122 transitions. Word has length 150 [2022-07-21 04:29:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:22,400 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 3122 transitions. [2022-07-21 04:29:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-21 04:29:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3122 transitions. [2022-07-21 04:29:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 04:29:22,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:22,403 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-21 04:29:22,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 04:29:22,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:22,624 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2146278543, now seen corresponding path program 1 times [2022-07-21 04:29:22,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:22,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451679768] [2022-07-21 04:29:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:29:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:29:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:29:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:29:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 04:29:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:29:22,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:22,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451679768] [2022-07-21 04:29:22,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451679768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:22,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:22,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 04:29:22,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794176065] [2022-07-21 04:29:22,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:22,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 04:29:22,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:22,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 04:29:22,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:29:22,946 INFO L87 Difference]: Start difference. First operand 1917 states and 3122 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-21 04:29:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:30,670 INFO L93 Difference]: Finished difference Result 4530 states and 7662 transitions. [2022-07-21 04:29:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 04:29:30,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 155 [2022-07-21 04:29:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:30,683 INFO L225 Difference]: With dead ends: 4530 [2022-07-21 04:29:30,684 INFO L226 Difference]: Without dead ends: 2687 [2022-07-21 04:29:30,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-21 04:29:30,689 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 4560 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 6464 mSolverCounterSat, 1450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 4552 SdHoareTripleChecker+Invalid, 7914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1450 IncrementalHoareTripleChecker+Valid, 6464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:30,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4622 Valid, 4552 Invalid, 7914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1450 Valid, 6464 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-21 04:29:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2022-07-21 04:29:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2054. [2022-07-21 04:29:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1555 states have (on average 1.5916398713826367) internal successors, (2475), 1637 states have internal predecessors, (2475), 393 states have call successors, (393), 78 states have call predecessors, (393), 105 states have return successors, (478), 386 states have call predecessors, (478), 388 states have call successors, (478) [2022-07-21 04:29:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3346 transitions. [2022-07-21 04:29:31,349 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3346 transitions. Word has length 155 [2022-07-21 04:29:31,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:31,350 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3346 transitions. [2022-07-21 04:29:31,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-21 04:29:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3346 transitions. [2022-07-21 04:29:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 04:29:31,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:31,352 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-21 04:29:31,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 04:29:31,352 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1260133001, now seen corresponding path program 1 times [2022-07-21 04:29:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:31,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212731602] [2022-07-21 04:29:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:31,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:29:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:29:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:29:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:29:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:29:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:29:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:29:31,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:31,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212731602] [2022-07-21 04:29:31,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212731602] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:29:31,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322953870] [2022-07-21 04:29:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:31,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:31,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:29:31,746 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:29:31,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 04:29:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:31,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 04:29:31,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:29:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:29:32,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:29:32,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322953870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:32,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:29:32,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-21 04:29:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710451778] [2022-07-21 04:29:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:32,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:29:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:29:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:29:32,081 INFO L87 Difference]: Start difference. First operand 2054 states and 3346 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:29:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:34,286 INFO L93 Difference]: Finished difference Result 6547 states and 10911 transitions. [2022-07-21 04:29:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:29:34,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-07-21 04:29:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:34,299 INFO L225 Difference]: With dead ends: 6547 [2022-07-21 04:29:34,299 INFO L226 Difference]: Without dead ends: 4565 [2022-07-21 04:29:34,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:34,303 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1817 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:34,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 1414 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 04:29:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2022-07-21 04:29:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4341. [2022-07-21 04:29:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4341 states, 3223 states have (on average 1.5935463853552592) internal successors, (5136), 3414 states have internal predecessors, (5136), 896 states have call successors, (896), 151 states have call predecessors, (896), 221 states have return successors, (1171), 891 states have call predecessors, (1171), 891 states have call successors, (1171) [2022-07-21 04:29:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4341 states to 4341 states and 7203 transitions. [2022-07-21 04:29:35,567 INFO L78 Accepts]: Start accepts. Automaton has 4341 states and 7203 transitions. Word has length 160 [2022-07-21 04:29:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:35,568 INFO L495 AbstractCegarLoop]: Abstraction has 4341 states and 7203 transitions. [2022-07-21 04:29:35,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:29:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4341 states and 7203 transitions. [2022-07-21 04:29:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 04:29:35,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:35,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-21 04:29:35,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 04:29:35,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:35,789 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash -409552112, now seen corresponding path program 1 times [2022-07-21 04:29:35,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:35,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765213986] [2022-07-21 04:29:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:35,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:35,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:35,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:29:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:29:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:29:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:29:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:29:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:29:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:29:36,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:36,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765213986] [2022-07-21 04:29:36,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765213986] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:29:36,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694613894] [2022-07-21 04:29:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:36,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:36,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:29:36,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:29:36,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 04:29:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:36,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 04:29:36,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:29:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:29:36,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:29:36,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694613894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:36,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:29:36,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-21 04:29:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191135703] [2022-07-21 04:29:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:36,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:29:36,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:29:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:29:36,491 INFO L87 Difference]: Start difference. First operand 4341 states and 7203 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:29:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:40,743 INFO L93 Difference]: Finished difference Result 14252 states and 24326 transitions. [2022-07-21 04:29:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:29:40,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2022-07-21 04:29:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:40,773 INFO L225 Difference]: With dead ends: 14252 [2022-07-21 04:29:40,774 INFO L226 Difference]: Without dead ends: 9983 [2022-07-21 04:29:40,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 196 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:40,783 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 1819 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:40,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 1356 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 04:29:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9983 states. [2022-07-21 04:29:44,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9983 to 9504. [2022-07-21 04:29:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9504 states, 6906 states have (on average 1.5887633941500146) internal successors, (10972), 7361 states have internal predecessors, (10972), 2126 states have call successors, (2126), 297 states have call predecessors, (2126), 471 states have return successors, (3049), 2133 states have call predecessors, (3049), 2121 states have call successors, (3049) [2022-07-21 04:29:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9504 states to 9504 states and 16147 transitions. [2022-07-21 04:29:44,067 INFO L78 Accepts]: Start accepts. Automaton has 9504 states and 16147 transitions. Word has length 161 [2022-07-21 04:29:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:44,068 INFO L495 AbstractCegarLoop]: Abstraction has 9504 states and 16147 transitions. [2022-07-21 04:29:44,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:29:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 9504 states and 16147 transitions. [2022-07-21 04:29:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 04:29:44,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:44,072 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-21 04:29:44,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-21 04:29:44,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-21 04:29:44,290 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:44,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:44,291 INFO L85 PathProgramCache]: Analyzing trace with hash 188655577, now seen corresponding path program 1 times [2022-07-21 04:29:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:44,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422887436] [2022-07-21 04:29:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:44,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:29:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:29:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:29:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:29:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:29:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:29:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:29:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:29:44,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422887436] [2022-07-21 04:29:44,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422887436] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:29:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856010568] [2022-07-21 04:29:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:44,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:29:44,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:29:44,686 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:29:44,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 04:29:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:44,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 04:29:44,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:29:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:29:44,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:29:44,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856010568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:44,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:29:44,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-21 04:29:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379839743] [2022-07-21 04:29:44,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:44,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:29:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:29:44,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:29:44,996 INFO L87 Difference]: Start difference. First operand 9504 states and 16147 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:29:54,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:54,480 INFO L93 Difference]: Finished difference Result 31915 states and 56483 transitions. [2022-07-21 04:29:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:29:54,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 162 [2022-07-21 04:29:54,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:54,565 INFO L225 Difference]: With dead ends: 31915 [2022-07-21 04:29:54,565 INFO L226 Difference]: Without dead ends: 22483 [2022-07-21 04:29:54,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:54,594 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1807 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:54,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 1354 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 04:29:54,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22483 states. [2022-07-21 04:30:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22483 to 21491. [2022-07-21 04:30:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21491 states, 15257 states have (on average 1.580258242118372) internal successors, (24110), 16360 states have internal predecessors, (24110), 5218 states have call successors, (5218), 589 states have call predecessors, (5218), 1015 states have return successors, (8401), 5273 states have call predecessors, (8401), 5213 states have call successors, (8401) [2022-07-21 04:30:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21491 states to 21491 states and 37729 transitions. [2022-07-21 04:30:05,494 INFO L78 Accepts]: Start accepts. Automaton has 21491 states and 37729 transitions. Word has length 162 [2022-07-21 04:30:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:30:05,495 INFO L495 AbstractCegarLoop]: Abstraction has 21491 states and 37729 transitions. [2022-07-21 04:30:05,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:30:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 21491 states and 37729 transitions. [2022-07-21 04:30:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-21 04:30:05,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:30:05,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-21 04:30:05,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-21 04:30:05,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-21 04:30:05,722 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:30:05,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:30:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1553228658, now seen corresponding path program 1 times [2022-07-21 04:30:05,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:30:05,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058525171] [2022-07-21 04:30:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:05,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:30:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:05,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:30:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:30:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:30:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:30:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:30:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:30:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:30:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:30:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:30:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:30:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:30:06,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:30:06,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058525171] [2022-07-21 04:30:06,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058525171] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:30:06,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830476916] [2022-07-21 04:30:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:06,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:30:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:30:06,101 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:30:06,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 04:30:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:06,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 04:30:06,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:30:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:30:06,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:30:06,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830476916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:30:06,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:30:06,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-21 04:30:06,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077752554] [2022-07-21 04:30:06,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:30:06,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:30:06,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:30:06,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:30:06,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:30:06,426 INFO L87 Difference]: Start difference. First operand 21491 states and 37729 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:30:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:30:28,814 INFO L93 Difference]: Finished difference Result 73478 states and 137396 transitions. [2022-07-21 04:30:28,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:30:28,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 163 [2022-07-21 04:30:28,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:30:29,122 INFO L225 Difference]: With dead ends: 73478 [2022-07-21 04:30:29,122 INFO L226 Difference]: Without dead ends: 52059 [2022-07-21 04:30:29,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:30:29,218 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1795 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:30:29,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 1352 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 04:30:29,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52059 states. [2022-07-21 04:30:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52059 to 50150. [2022-07-21 04:30:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50150 states, 34764 states have (on average 1.5697848348866643) internal successors, (54572), 37479 states have internal predecessors, (54572), 13170 states have call successors, (13170), 1173 states have call predecessors, (13170), 2215 states have return successors, (24389), 13393 states have call predecessors, (24389), 13165 states have call successors, (24389) [2022-07-21 04:30:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50150 states to 50150 states and 92131 transitions. [2022-07-21 04:30:49,619 INFO L78 Accepts]: Start accepts. Automaton has 50150 states and 92131 transitions. Word has length 163 [2022-07-21 04:30:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:30:49,619 INFO L495 AbstractCegarLoop]: Abstraction has 50150 states and 92131 transitions. [2022-07-21 04:30:49,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:30:49,620 INFO L276 IsEmpty]: Start isEmpty. Operand 50150 states and 92131 transitions. [2022-07-21 04:30:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-21 04:30:49,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:30:49,624 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-21 04:30:49,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 04:30:49,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-21 04:30:49,839 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:30:49,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:30:49,840 INFO L85 PathProgramCache]: Analyzing trace with hash 905325115, now seen corresponding path program 1 times [2022-07-21 04:30:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:30:49,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194090634] [2022-07-21 04:30:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:30:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:30:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:30:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:30:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:30:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:30:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:30:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:30:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:30:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:30:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:30:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 04:30:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:30:50,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194090634] [2022-07-21 04:30:50,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194090634] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:30:50,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383498783] [2022-07-21 04:30:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:50,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:30:50,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:30:50,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:30:50,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 04:30:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:50,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 04:30:50,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:30:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:30:50,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:30:50,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383498783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:30:50,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:30:50,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-21 04:30:50,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11327401] [2022-07-21 04:30:50,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:30:50,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:30:50,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:30:50,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:30:50,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:30:50,526 INFO L87 Difference]: Start difference. First operand 50150 states and 92131 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17)