./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product24.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_product24.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 e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:28:36,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:28:36,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:28:36,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:28:36,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:28:36,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:28:36,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:28:36,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:28:36,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:28:36,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:28:36,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:28:36,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:28:36,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:28:36,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:28:36,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:28:36,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:28:36,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:28:36,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:28:36,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:28:36,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:28:36,092 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:28:36,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:28:36,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:28:36,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:28:36,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:28:36,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:28:36,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:28:36,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:28:36,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:28:36,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:28:36,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:28:36,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:28:36,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:28:36,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:28:36,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:28:36,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:28:36,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:28:36,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:28:36,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:28:36,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:28:36,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:28:36,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:28:36,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:28:36,164 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:28:36,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:28:36,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:28:36,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:28:36,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:28:36,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:28:36,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:28:36,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:28:36,167 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:28:36,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:28:36,168 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:28:36,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:28:36,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:28:36,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:28:36,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:28:36,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:28:36,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:28:36,169 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:28:36,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:28:36,170 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:28:36,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:28:36,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:28:36,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:28:36,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:28:36,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:28:36,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:28:36,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:28:36,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:28:36,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:28:36,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:28:36,172 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:28:36,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:28:36,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:28:36,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e942074e046d4b6eec963a95d600daf33500a37aba1da700aae37a309fea4cda [2022-07-21 04:28:36,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:28:36,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:28:36,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:28:36,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:28:36,474 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:28:36,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2022-07-21 04:28:36,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f34ba45f/2427616a10634cefa0cff3936874644c/FLAG9925cc274 [2022-07-21 04:28:37,112 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:28:37,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product24.cil.c [2022-07-21 04:28:37,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f34ba45f/2427616a10634cefa0cff3936874644c/FLAG9925cc274 [2022-07-21 04:28:37,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f34ba45f/2427616a10634cefa0cff3936874644c [2022-07-21 04:28:37,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:28:37,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:28:37,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:28:37,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:28:37,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:28:37,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:28:37" (1/1) ... [2022-07-21 04:28:37,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23366d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:37, skipping insertion in model container [2022-07-21 04:28:37,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:28:37" (1/1) ... [2022-07-21 04:28:37,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:28:37,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:28:37,924 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_product24.cil.c[63703,63716] [2022-07-21 04:28:37,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:28:37,994 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:28:38,076 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_product24.cil.c[63703,63716] [2022-07-21 04:28:38,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:28:38,124 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:28:38,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38 WrapperNode [2022-07-21 04:28:38,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:28:38,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:28:38,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:28:38,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:28:38,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,233 INFO L137 Inliner]: procedures = 98, calls = 353, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 937 [2022-07-21 04:28:38,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:28:38,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:28:38,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:28:38,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:28:38,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:28:38,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:28:38,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:28:38,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:28:38,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (1/1) ... [2022-07-21 04:28:38,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:28:38,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:28:38,343 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 04:28:38,353 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 04:28:38,377 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-21 04:28:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-21 04:28:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-21 04:28:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-21 04:28:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-21 04:28:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-21 04:28:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-21 04:28:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-21 04:28:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-21 04:28:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-21 04:28:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-21 04:28:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-21 04:28:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-21 04:28:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-21 04:28:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-21 04:28:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-21 04:28:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-21 04:28:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-21 04:28:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-21 04:28:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-21 04:28:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:28:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-21 04:28:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-21 04:28:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-21 04:28:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-21 04:28:38,381 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-21 04:28:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-21 04:28:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-21 04:28:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-21 04:28:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-21 04:28:38,382 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-21 04:28:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-21 04:28:38,383 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-21 04:28:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-21 04:28:38,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-21 04:28:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-21 04:28:38,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-21 04:28:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-21 04:28:38,384 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-21 04:28:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-21 04:28:38,384 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-21 04:28:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-21 04:28:38,385 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-21 04:28:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-21 04:28:38,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-21 04:28:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-21 04:28:38,385 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-21 04:28:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:28:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-21 04:28:38,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-21 04:28:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-21 04:28:38,386 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-21 04:28:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:28:38,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:28:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-21 04:28:38,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-21 04:28:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-21 04:28:38,389 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-21 04:28:38,615 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:28:38,617 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:28:39,441 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:28:39,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:28:39,451 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:28:39,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:28:39 BoogieIcfgContainer [2022-07-21 04:28:39,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:28:39,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:28:39,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:28:39,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:28:39,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:28:37" (1/3) ... [2022-07-21 04:28:39,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f82c593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:28:39, skipping insertion in model container [2022-07-21 04:28:39,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:38" (2/3) ... [2022-07-21 04:28:39,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f82c593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:28:39, skipping insertion in model container [2022-07-21 04:28:39,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:28:39" (3/3) ... [2022-07-21 04:28:39,460 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c [2022-07-21 04:28:39,472 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:28:39,472 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:28:39,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:28:39,539 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@3eeb20a6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@385a940d [2022-07-21 04:28:39,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:28:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 462 states have (on average 1.6753246753246753) internal successors, (774), 485 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-21 04:28:39,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 04:28:39,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:39,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:39,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1390945328, now seen corresponding path program 1 times [2022-07-21 04:28:39,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:39,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422863111] [2022-07-21 04:28:39,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:40,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:28:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 04:28:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:40,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:40,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:28:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:28:40,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:40,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422863111] [2022-07-21 04:28:40,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422863111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:40,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:40,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:28:40,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866422066] [2022-07-21 04:28:40,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:40,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:28:40,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:28:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:28:40,410 INFO L87 Difference]: Start difference. First operand has 596 states, 462 states have (on average 1.6753246753246753) internal successors, (774), 485 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:28:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:45,272 INFO L93 Difference]: Finished difference Result 1335 states and 2237 transitions. [2022-07-21 04:28:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:28:45,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-07-21 04:28:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:45,293 INFO L225 Difference]: With dead ends: 1335 [2022-07-21 04:28:45,293 INFO L226 Difference]: Without dead ends: 751 [2022-07-21 04:28:45,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:28:45,306 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 704 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:45,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1768 Invalid, 2570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-21 04:28:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-21 04:28:45,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-21 04:28:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.6710526315789473) internal successors, (762), 477 states have internal predecessors, (762), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-21 04:28:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 967 transitions. [2022-07-21 04:28:45,458 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 967 transitions. Word has length 60 [2022-07-21 04:28:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:45,459 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 967 transitions. [2022-07-21 04:28:45,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:28:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 967 transitions. [2022-07-21 04:28:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 04:28:45,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:45,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:45,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 04:28:45,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:45,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash -169141434, now seen corresponding path program 1 times [2022-07-21 04:28:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:45,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600511137] [2022-07-21 04:28:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:45,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 04:28:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:45,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:45,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:28:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:28:45,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:45,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600511137] [2022-07-21 04:28:45,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600511137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:45,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:45,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:28:45,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810878294] [2022-07-21 04:28:45,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:45,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:28:45,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:28:45,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:28:45,843 INFO L87 Difference]: Start difference. First operand 588 states and 967 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:28:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:49,804 INFO L93 Difference]: Finished difference Result 1321 states and 2203 transitions. [2022-07-21 04:28:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:28:49,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-07-21 04:28:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:49,816 INFO L225 Difference]: With dead ends: 1321 [2022-07-21 04:28:49,816 INFO L226 Difference]: Without dead ends: 751 [2022-07-21 04:28:49,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:28:49,827 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 1171 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:49,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 1725 Invalid, 2546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:28:49,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-21 04:28:49,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-21 04:28:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.668859649122807) internal successors, (761), 477 states have internal predecessors, (761), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-21 04:28:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 966 transitions. [2022-07-21 04:28:49,906 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 966 transitions. Word has length 63 [2022-07-21 04:28:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:49,907 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 966 transitions. [2022-07-21 04:28:49,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:28:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 966 transitions. [2022-07-21 04:28:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 04:28:49,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:49,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:49,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 04:28:49,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:49,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:49,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1831827845, now seen corresponding path program 1 times [2022-07-21 04:28:49,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:49,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835230356] [2022-07-21 04:28:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:49,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:50,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:50,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:28:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:28:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:28:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:28:50,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:50,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835230356] [2022-07-21 04:28:50,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835230356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:50,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:50,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:28:50,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103484452] [2022-07-21 04:28:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:50,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:28:50,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:50,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:28:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:28:50,246 INFO L87 Difference]: Start difference. First operand 588 states and 966 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:28:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:54,250 INFO L93 Difference]: Finished difference Result 1321 states and 2202 transitions. [2022-07-21 04:28:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:28:54,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-07-21 04:28:54,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:54,256 INFO L225 Difference]: With dead ends: 1321 [2022-07-21 04:28:54,256 INFO L226 Difference]: Without dead ends: 751 [2022-07-21 04:28:54,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:28:54,260 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 698 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:54,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1719 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:28:54,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-21 04:28:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-21 04:28:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.6666666666666667) internal successors, (760), 477 states have internal predecessors, (760), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-21 04:28:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 965 transitions. [2022-07-21 04:28:54,311 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 965 transitions. Word has length 64 [2022-07-21 04:28:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:54,311 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 965 transitions. [2022-07-21 04:28:54,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:28:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 965 transitions. [2022-07-21 04:28:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 04:28:54,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:54,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:54,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 04:28:54,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:54,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:54,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1497307746, now seen corresponding path program 1 times [2022-07-21 04:28:54,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:54,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994386084] [2022-07-21 04:28:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:54,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 04:28:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:54,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:28:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:54,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:54,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:28:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:28:54,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:54,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994386084] [2022-07-21 04:28:54,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994386084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:54,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:54,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:28:54,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619304441] [2022-07-21 04:28:54,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:54,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:28:54,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:54,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:28:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:28:54,646 INFO L87 Difference]: Start difference. First operand 588 states and 965 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:28:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:28:58,542 INFO L93 Difference]: Finished difference Result 1321 states and 2201 transitions. [2022-07-21 04:28:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:28:58,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-21 04:28:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:28:58,547 INFO L225 Difference]: With dead ends: 1321 [2022-07-21 04:28:58,547 INFO L226 Difference]: Without dead ends: 751 [2022-07-21 04:28:58,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:28:58,550 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 695 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:28:58,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1733 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-21 04:28:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-21 04:28:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-21 04:28:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 477 states have internal predecessors, (759), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-21 04:28:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 964 transitions. [2022-07-21 04:28:58,606 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 964 transitions. Word has length 65 [2022-07-21 04:28:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:28:58,606 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 964 transitions. [2022-07-21 04:28:58,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:28:58,607 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 964 transitions. [2022-07-21 04:28:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 04:28:58,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:28:58,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:28:58,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 04:28:58,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:28:58,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:28:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash 659135447, now seen corresponding path program 1 times [2022-07-21 04:28:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:28:58,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784449746] [2022-07-21 04:28:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:28:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:28:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:28:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:58,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 04:28:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:28:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:58,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:28:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:28:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:28:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:28:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:28:58,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784449746] [2022-07-21 04:28:58,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784449746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:28:58,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:28:58,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:28:58,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50043189] [2022-07-21 04:28:58,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:28:58,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:28:58,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:28:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:28:58,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:28:58,919 INFO L87 Difference]: Start difference. First operand 588 states and 964 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:02,372 INFO L93 Difference]: Finished difference Result 1321 states and 2200 transitions. [2022-07-21 04:29:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:29:02,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-21 04:29:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:02,377 INFO L225 Difference]: With dead ends: 1321 [2022-07-21 04:29:02,377 INFO L226 Difference]: Without dead ends: 751 [2022-07-21 04:29:02,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:29:02,381 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1164 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:02,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1702 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 04:29:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-07-21 04:29:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 588. [2022-07-21 04:29:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 456 states have (on average 1.662280701754386) internal successors, (758), 477 states have internal predecessors, (758), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-21 04:29:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 963 transitions. [2022-07-21 04:29:02,432 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 963 transitions. Word has length 66 [2022-07-21 04:29:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:02,432 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 963 transitions. [2022-07-21 04:29:02,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 963 transitions. [2022-07-21 04:29:02,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 04:29:02,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:02,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:02,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 04:29:02,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:02,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:02,435 INFO L85 PathProgramCache]: Analyzing trace with hash -516562562, now seen corresponding path program 1 times [2022-07-21 04:29:02,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:02,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675573599] [2022-07-21 04:29:02,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:02,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:02,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:02,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:29:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:02,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675573599] [2022-07-21 04:29:02,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675573599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:02,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:02,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:29:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785321208] [2022-07-21 04:29:02,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:02,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:29:02,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:29:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:29:02,782 INFO L87 Difference]: Start difference. First operand 588 states and 963 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:07,731 INFO L93 Difference]: Finished difference Result 1298 states and 2150 transitions. [2022-07-21 04:29:07,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:29:07,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-07-21 04:29:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:07,736 INFO L225 Difference]: With dead ends: 1298 [2022-07-21 04:29:07,737 INFO L226 Difference]: Without dead ends: 777 [2022-07-21 04:29:07,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:29:07,740 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 803 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 4827 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 4980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 4827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:07,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2695 Invalid, 4980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 4827 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 04:29:07,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-07-21 04:29:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 601. [2022-07-21 04:29:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6587982832618027) internal successors, (773), 489 states have internal predecessors, (773), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-21 04:29:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 982 transitions. [2022-07-21 04:29:07,796 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 982 transitions. Word has length 67 [2022-07-21 04:29:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:07,796 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 982 transitions. [2022-07-21 04:29:07,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 982 transitions. [2022-07-21 04:29:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 04:29:07,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:07,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:07,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:29:07,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:07,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash -757102691, now seen corresponding path program 1 times [2022-07-21 04:29:07,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:07,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980338345] [2022-07-21 04:29:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:07,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:07,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:07,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:29:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:08,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:08,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980338345] [2022-07-21 04:29:08,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980338345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:08,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:08,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:29:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495588994] [2022-07-21 04:29:08,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:08,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:29:08,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:08,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:29:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:29:08,109 INFO L87 Difference]: Start difference. First operand 601 states and 982 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:11,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:11,867 INFO L93 Difference]: Finished difference Result 1312 states and 2173 transitions. [2022-07-21 04:29:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:29:11,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-07-21 04:29:11,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:11,872 INFO L225 Difference]: With dead ends: 1312 [2022-07-21 04:29:11,872 INFO L226 Difference]: Without dead ends: 773 [2022-07-21 04:29:11,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:29:11,875 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 758 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:11,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1651 Invalid, 2568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:29:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-21 04:29:11,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 601. [2022-07-21 04:29:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.648068669527897) internal successors, (768), 489 states have internal predecessors, (768), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-21 04:29:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 977 transitions. [2022-07-21 04:29:11,929 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 977 transitions. Word has length 67 [2022-07-21 04:29:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:11,929 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 977 transitions. [2022-07-21 04:29:11,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 977 transitions. [2022-07-21 04:29:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 04:29:11,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:11,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:11,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:29:11,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:11,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:11,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1269161536, now seen corresponding path program 1 times [2022-07-21 04:29:11,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:11,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317197330] [2022-07-21 04:29:11,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:11,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:12,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 04:29:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:12,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:12,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:12,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317197330] [2022-07-21 04:29:12,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317197330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:12,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:12,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:29:12,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820703366] [2022-07-21 04:29:12,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:12,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:29:12,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:12,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:29:12,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:29:12,210 INFO L87 Difference]: Start difference. First operand 601 states and 977 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:15,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:15,755 INFO L93 Difference]: Finished difference Result 1312 states and 2168 transitions. [2022-07-21 04:29:15,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:29:15,756 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-21 04:29:15,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:15,760 INFO L225 Difference]: With dead ends: 1312 [2022-07-21 04:29:15,760 INFO L226 Difference]: Without dead ends: 773 [2022-07-21 04:29:15,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:29:15,763 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 757 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:15,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1666 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 04:29:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-21 04:29:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 601. [2022-07-21 04:29:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6373390557939915) internal successors, (763), 489 states have internal predecessors, (763), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-21 04:29:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 972 transitions. [2022-07-21 04:29:15,819 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 972 transitions. Word has length 68 [2022-07-21 04:29:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:15,819 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 972 transitions. [2022-07-21 04:29:15,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 972 transitions. [2022-07-21 04:29:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 04:29:15,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:15,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:15,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:29:15,821 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:15,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1710327234, now seen corresponding path program 1 times [2022-07-21 04:29:15,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:15,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864802019] [2022-07-21 04:29:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:15,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 04:29:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:16,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:16,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864802019] [2022-07-21 04:29:16,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864802019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:16,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:16,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:29:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031192057] [2022-07-21 04:29:16,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:16,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:29:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:29:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:29:16,088 INFO L87 Difference]: Start difference. First operand 601 states and 972 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:19,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:19,677 INFO L93 Difference]: Finished difference Result 1312 states and 2163 transitions. [2022-07-21 04:29:19,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:29:19,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-21 04:29:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:19,684 INFO L225 Difference]: With dead ends: 1312 [2022-07-21 04:29:19,684 INFO L226 Difference]: Without dead ends: 773 [2022-07-21 04:29:19,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:29:19,689 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 767 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:19,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1646 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 04:29:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-21 04:29:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 601. [2022-07-21 04:29:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6266094420600858) internal successors, (758), 489 states have internal predecessors, (758), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-21 04:29:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 967 transitions. [2022-07-21 04:29:19,757 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 967 transitions. Word has length 69 [2022-07-21 04:29:19,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:19,757 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 967 transitions. [2022-07-21 04:29:19,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 967 transitions. [2022-07-21 04:29:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 04:29:19,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:19,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:19,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:29:19,759 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:19,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1166970523, now seen corresponding path program 1 times [2022-07-21 04:29:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:19,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641675824] [2022-07-21 04:29:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:19,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:20,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:20,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641675824] [2022-07-21 04:29:20,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641675824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:20,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:20,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:29:20,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833751300] [2022-07-21 04:29:20,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:20,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:29:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:20,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:29:20,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:29:20,076 INFO L87 Difference]: Start difference. First operand 601 states and 967 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:24,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:24,665 INFO L93 Difference]: Finished difference Result 1304 states and 2140 transitions. [2022-07-21 04:29:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:29:24,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-07-21 04:29:24,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:24,671 INFO L225 Difference]: With dead ends: 1304 [2022-07-21 04:29:24,671 INFO L226 Difference]: Without dead ends: 780 [2022-07-21 04:29:24,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:24,674 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1252 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 4560 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 4900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 4560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:24,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 2550 Invalid, 4900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 4560 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-21 04:29:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-07-21 04:29:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 601. [2022-07-21 04:29:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6244635193133048) internal successors, (757), 489 states have internal predecessors, (757), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-21 04:29:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 966 transitions. [2022-07-21 04:29:24,731 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 966 transitions. Word has length 70 [2022-07-21 04:29:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:24,731 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 966 transitions. [2022-07-21 04:29:24,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 966 transitions. [2022-07-21 04:29:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 04:29:24,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:24,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:24,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 04:29:24,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:24,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:24,734 INFO L85 PathProgramCache]: Analyzing trace with hash 258078789, now seen corresponding path program 1 times [2022-07-21 04:29:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:24,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108969823] [2022-07-21 04:29:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:24,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:29:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:25,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:25,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108969823] [2022-07-21 04:29:25,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108969823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:25,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:25,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:29:25,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418869323] [2022-07-21 04:29:25,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:25,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:29:25,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:29:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:29:25,047 INFO L87 Difference]: Start difference. First operand 601 states and 966 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:28,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:28,490 INFO L93 Difference]: Finished difference Result 1312 states and 2155 transitions. [2022-07-21 04:29:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:29:28,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-21 04:29:28,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:28,494 INFO L225 Difference]: With dead ends: 1312 [2022-07-21 04:29:28,495 INFO L226 Difference]: Without dead ends: 773 [2022-07-21 04:29:28,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:29:28,497 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 765 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:28,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1626 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 04:29:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-21 04:29:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 601. [2022-07-21 04:29:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.613733905579399) internal successors, (752), 489 states have internal predecessors, (752), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-21 04:29:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 961 transitions. [2022-07-21 04:29:28,554 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 961 transitions. Word has length 70 [2022-07-21 04:29:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:28,554 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 961 transitions. [2022-07-21 04:29:28,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 961 transitions. [2022-07-21 04:29:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 04:29:28,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:28,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:28,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 04:29:28,556 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:28,557 INFO L85 PathProgramCache]: Analyzing trace with hash -683133371, now seen corresponding path program 1 times [2022-07-21 04:29:28,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:28,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857866526] [2022-07-21 04:29:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:28,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:28,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:29:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:28,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:28,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:28,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:28,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857866526] [2022-07-21 04:29:28,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857866526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:28,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:28,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:29:28,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510003770] [2022-07-21 04:29:28,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:28,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:29:28,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:28,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:29:28,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:29:28,885 INFO L87 Difference]: Start difference. First operand 601 states and 961 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:33,336 INFO L93 Difference]: Finished difference Result 1325 states and 2165 transitions. [2022-07-21 04:29:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:29:33,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2022-07-21 04:29:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:33,340 INFO L225 Difference]: With dead ends: 1325 [2022-07-21 04:29:33,341 INFO L226 Difference]: Without dead ends: 798 [2022-07-21 04:29:33,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:33,343 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1246 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 4537 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 4873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 4537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:33,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 2579 Invalid, 4873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 4537 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:29:33,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-07-21 04:29:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 604. [2022-07-21 04:29:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 469 states have (on average 1.607675906183369) internal successors, (754), 492 states have internal predecessors, (754), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-21 04:29:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 963 transitions. [2022-07-21 04:29:33,400 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 963 transitions. Word has length 71 [2022-07-21 04:29:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:33,400 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 963 transitions. [2022-07-21 04:29:33,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 963 transitions. [2022-07-21 04:29:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 04:29:33,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:33,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:33,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:29:33,402 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 239534055, now seen corresponding path program 1 times [2022-07-21 04:29:33,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:33,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289806011] [2022-07-21 04:29:33,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:33,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:33,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:33,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:29:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:33,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:33,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:33,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289806011] [2022-07-21 04:29:33,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289806011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:33,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:33,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:29:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360816676] [2022-07-21 04:29:33,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:33,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:29:33,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:29:33,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:29:33,671 INFO L87 Difference]: Start difference. First operand 604 states and 963 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:37,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:37,143 INFO L93 Difference]: Finished difference Result 1321 states and 2156 transitions. [2022-07-21 04:29:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:29:37,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-21 04:29:37,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:37,158 INFO L225 Difference]: With dead ends: 1321 [2022-07-21 04:29:37,158 INFO L226 Difference]: Without dead ends: 779 [2022-07-21 04:29:37,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:29:37,160 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 764 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:37,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1635 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 04:29:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-07-21 04:29:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 604. [2022-07-21 04:29:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 469 states have (on average 1.5970149253731343) internal successors, (749), 492 states have internal predecessors, (749), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-21 04:29:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 958 transitions. [2022-07-21 04:29:37,221 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 958 transitions. Word has length 71 [2022-07-21 04:29:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:37,221 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 958 transitions. [2022-07-21 04:29:37,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 958 transitions. [2022-07-21 04:29:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 04:29:37,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:37,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:37,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 04:29:37,223 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash 342549610, now seen corresponding path program 1 times [2022-07-21 04:29:37,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:37,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131032919] [2022-07-21 04:29:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:37,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:37,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:29:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:37,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:37,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:37,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:37,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:37,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131032919] [2022-07-21 04:29:37,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131032919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:37,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:37,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:29:37,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776448830] [2022-07-21 04:29:37,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:37,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:29:37,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:29:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:29:37,539 INFO L87 Difference]: Start difference. First operand 604 states and 958 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:41,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:41,988 INFO L93 Difference]: Finished difference Result 1331 states and 2162 transitions. [2022-07-21 04:29:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:29:41,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-21 04:29:41,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:41,991 INFO L225 Difference]: With dead ends: 1331 [2022-07-21 04:29:41,991 INFO L226 Difference]: Without dead ends: 804 [2022-07-21 04:29:41,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:41,993 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1240 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 4838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:41,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 2563 Invalid, 4838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 4499 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:29:41,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-07-21 04:29:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 608. [2022-07-21 04:29:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 473 states have (on average 1.5898520084566596) internal successors, (752), 496 states have internal predecessors, (752), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-21 04:29:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 961 transitions. [2022-07-21 04:29:42,078 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 961 transitions. Word has length 72 [2022-07-21 04:29:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:42,079 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 961 transitions. [2022-07-21 04:29:42,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 961 transitions. [2022-07-21 04:29:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 04:29:42,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:42,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:42,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 04:29:42,081 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:42,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1716131402, now seen corresponding path program 1 times [2022-07-21 04:29:42,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:42,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075304902] [2022-07-21 04:29:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:42,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:42,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:42,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:29:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:42,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:42,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:42,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:42,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:42,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075304902] [2022-07-21 04:29:42,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075304902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:42,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:42,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:29:42,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699367470] [2022-07-21 04:29:42,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:42,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:29:42,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:42,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:29:42,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:29:42,349 INFO L87 Difference]: Start difference. First operand 608 states and 961 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:45,500 INFO L93 Difference]: Finished difference Result 1369 states and 2201 transitions. [2022-07-21 04:29:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:29:45,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-21 04:29:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:45,506 INFO L225 Difference]: With dead ends: 1369 [2022-07-21 04:29:45,507 INFO L226 Difference]: Without dead ends: 759 [2022-07-21 04:29:45,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:29:45,510 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1158 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:45,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1645 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 04:29:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-07-21 04:29:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 589. [2022-07-21 04:29:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.5973741794310723) internal successors, (730), 478 states have internal predecessors, (730), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-21 04:29:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 935 transitions. [2022-07-21 04:29:45,571 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 935 transitions. Word has length 72 [2022-07-21 04:29:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:45,572 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 935 transitions. [2022-07-21 04:29:45,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:45,572 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 935 transitions. [2022-07-21 04:29:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 04:29:45,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:45,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:45,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:29:45,574 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash 985584106, now seen corresponding path program 1 times [2022-07-21 04:29:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:45,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894871288] [2022-07-21 04:29:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:45,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:29:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:45,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:45,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894871288] [2022-07-21 04:29:45,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894871288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:45,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:45,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:29:45,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150497090] [2022-07-21 04:29:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:45,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:29:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:45,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:29:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:29:45,908 INFO L87 Difference]: Start difference. First operand 589 states and 935 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:50,336 INFO L93 Difference]: Finished difference Result 1304 states and 2116 transitions. [2022-07-21 04:29:50,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:29:50,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-07-21 04:29:50,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:50,340 INFO L225 Difference]: With dead ends: 1304 [2022-07-21 04:29:50,340 INFO L226 Difference]: Without dead ends: 780 [2022-07-21 04:29:50,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:29:50,342 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 1203 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 4432 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 4761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 4432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:50,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 2553 Invalid, 4761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 4432 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:29:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-07-21 04:29:50,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 594. [2022-07-21 04:29:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 462 states have (on average 1.5909090909090908) internal successors, (735), 483 states have internal predecessors, (735), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-21 04:29:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 940 transitions. [2022-07-21 04:29:50,404 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 940 transitions. Word has length 73 [2022-07-21 04:29:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:50,405 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 940 transitions. [2022-07-21 04:29:50,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:29:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 940 transitions. [2022-07-21 04:29:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 04:29:50,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:50,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:50,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:29:50,407 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:50,407 INFO L85 PathProgramCache]: Analyzing trace with hash 638082109, now seen corresponding path program 1 times [2022-07-21 04:29:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:50,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452799665] [2022-07-21 04:29:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:50,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:50,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:50,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:50,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:50,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:50,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452799665] [2022-07-21 04:29:50,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452799665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:50,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:50,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:29:50,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199240151] [2022-07-21 04:29:50,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:50,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:29:50,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:29:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:29:50,717 INFO L87 Difference]: Start difference. First operand 594 states and 940 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:29:54,007 INFO L93 Difference]: Finished difference Result 1302 states and 2111 transitions. [2022-07-21 04:29:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:29:54,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-07-21 04:29:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:29:54,011 INFO L225 Difference]: With dead ends: 1302 [2022-07-21 04:29:54,011 INFO L226 Difference]: Without dead ends: 757 [2022-07-21 04:29:54,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:29:54,016 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1191 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:29:54,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1633 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 04:29:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-07-21 04:29:54,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 594. [2022-07-21 04:29:54,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 462 states have (on average 1.5822510822510822) internal successors, (731), 483 states have internal predecessors, (731), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-21 04:29:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 936 transitions. [2022-07-21 04:29:54,076 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 936 transitions. Word has length 74 [2022-07-21 04:29:54,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:29:54,076 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 936 transitions. [2022-07-21 04:29:54,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:29:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 936 transitions. [2022-07-21 04:29:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 04:29:54,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:29:54,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:29:54,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:29:54,079 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:29:54,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:29:54,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1607497345, now seen corresponding path program 1 times [2022-07-21 04:29:54,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:29:54,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240602248] [2022-07-21 04:29:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:29:54,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:29:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:54,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:29:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:54,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:29:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:54,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:29:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:54,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:29:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:54,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:29:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:29:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:29:54,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:29:54,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240602248] [2022-07-21 04:29:54,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240602248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:29:54,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:29:54,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:29:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720511385] [2022-07-21 04:29:54,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:29:54,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:29:54,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:29:54,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:29:54,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:29:54,477 INFO L87 Difference]: Start difference. First operand 594 states and 936 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 04:30:02,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:30:02,102 INFO L93 Difference]: Finished difference Result 2132 states and 3551 transitions. [2022-07-21 04:30:02,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:30:02,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-07-21 04:30:02,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:30:02,113 INFO L225 Difference]: With dead ends: 2132 [2022-07-21 04:30:02,113 INFO L226 Difference]: Without dead ends: 1616 [2022-07-21 04:30:02,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:30:02,116 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 3679 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 4484 mSolverCounterSat, 1145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3776 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 5629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1145 IncrementalHoareTripleChecker+Valid, 4484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:30:02,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3776 Valid, 2271 Invalid, 5629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1145 Valid, 4484 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-07-21 04:30:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-07-21 04:30:02,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1136. [2022-07-21 04:30:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 883 states have (on average 1.6194790486976218) internal successors, (1430), 913 states have internal predecessors, (1430), 204 states have call successors, (204), 47 states have call predecessors, (204), 48 states have return successors, (206), 188 states have call predecessors, (206), 199 states have call successors, (206) [2022-07-21 04:30:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1840 transitions. [2022-07-21 04:30:02,296 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1840 transitions. Word has length 74 [2022-07-21 04:30:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:30:02,296 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1840 transitions. [2022-07-21 04:30:02,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 04:30:02,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1840 transitions. [2022-07-21 04:30:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 04:30:02,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:30:02,301 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:30:02,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:30:02,301 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:30:02,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:30:02,302 INFO L85 PathProgramCache]: Analyzing trace with hash -857434917, now seen corresponding path program 1 times [2022-07-21 04:30:02,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:30:02,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547014675] [2022-07-21 04:30:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:30:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:30:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:30:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:30:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:30:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:30:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:30:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:30:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:30:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:30:02,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:30:02,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547014675] [2022-07-21 04:30:02,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547014675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:30:02,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:30:02,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:30:02,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463153170] [2022-07-21 04:30:02,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:30:02,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:30:02,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:30:02,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:30:02,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:30:02,879 INFO L87 Difference]: Start difference. First operand 1136 states and 1840 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 04:30:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:30:21,974 INFO L93 Difference]: Finished difference Result 6056 states and 10172 transitions. [2022-07-21 04:30:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-21 04:30:21,974 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 128 [2022-07-21 04:30:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:30:22,004 INFO L225 Difference]: With dead ends: 6056 [2022-07-21 04:30:22,004 INFO L226 Difference]: Without dead ends: 4999 [2022-07-21 04:30:22,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=760, Invalid=2546, Unknown=0, NotChecked=0, Total=3306 [2022-07-21 04:30:22,013 INFO L413 NwaCegarLoop]: 1991 mSDtfsCounter, 4135 mSDsluCounter, 3782 mSDsCounter, 0 mSdLazyCounter, 12876 mSolverCounterSat, 2483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 5773 SdHoareTripleChecker+Invalid, 15359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2483 IncrementalHoareTripleChecker+Valid, 12876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:30:22,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4147 Valid, 5773 Invalid, 15359 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2483 Valid, 12876 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-07-21 04:30:22,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2022-07-21 04:30:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 2763. [2022-07-21 04:30:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2128 states have (on average 1.605263157894737) internal successors, (3416), 2179 states have internal predecessors, (3416), 498 states have call successors, (498), 127 states have call predecessors, (498), 136 states have return successors, (566), 478 states have call predecessors, (566), 493 states have call successors, (566) [2022-07-21 04:30:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4480 transitions. [2022-07-21 04:30:22,416 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4480 transitions. Word has length 128 [2022-07-21 04:30:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:30:22,416 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4480 transitions. [2022-07-21 04:30:22,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 04:30:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4480 transitions. [2022-07-21 04:30:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-21 04:30:22,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:30:22,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 04:30:22,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 04:30:22,422 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:30:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:30:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -947376971, now seen corresponding path program 1 times [2022-07-21 04:30:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:30:22,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240270337] [2022-07-21 04:30:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:30:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:22,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:22,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:30:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:22,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:30:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:22,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:30:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:30:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:30:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:30:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:30:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 04:30:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:30:23,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240270337] [2022-07-21 04:30:23,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240270337] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:30:23,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284058625] [2022-07-21 04:30:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:23,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:30:23,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:30:23,067 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 04:30:23,078 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 04:30:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:23,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1696 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:30:23,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:30:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:30:23,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:30:23,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284058625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:30:23,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:30:23,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-07-21 04:30:23,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783578950] [2022-07-21 04:30:23,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:30:23,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:30:23,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:30:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:30:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:30:23,533 INFO L87 Difference]: Start difference. First operand 2763 states and 4480 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, (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 04:30:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:30:24,362 INFO L93 Difference]: Finished difference Result 5512 states and 9162 transitions. [2022-07-21 04:30:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:30:24,362 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, (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 129 [2022-07-21 04:30:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:30:24,376 INFO L225 Difference]: With dead ends: 5512 [2022-07-21 04:30:24,376 INFO L226 Difference]: Without dead ends: 2827 [2022-07-21 04:30:24,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:30:24,390 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 863 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:30:24,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 2301 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:30:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2022-07-21 04:30:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2827. [2022-07-21 04:30:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2827 states, 2184 states have (on average 1.6080586080586081) internal successors, (3512), 2235 states have internal predecessors, (3512), 498 states have call successors, (498), 135 states have call predecessors, (498), 144 states have return successors, (574), 478 states have call predecessors, (574), 493 states have call successors, (574) [2022-07-21 04:30:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4584 transitions. [2022-07-21 04:30:24,797 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4584 transitions. Word has length 129 [2022-07-21 04:30:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:30:24,797 INFO L495 AbstractCegarLoop]: Abstraction has 2827 states and 4584 transitions. [2022-07-21 04:30:24,798 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, (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 04:30:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4584 transitions. [2022-07-21 04:30:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 04:30:24,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:30:24,803 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 04:30:24,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:30:25,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:30:25,020 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:30:25,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:30:25,020 INFO L85 PathProgramCache]: Analyzing trace with hash -584278497, now seen corresponding path program 1 times [2022-07-21 04:30:25,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:30:25,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864563146] [2022-07-21 04:30:25,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:25,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:30:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:30:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:30:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:30:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 04:30:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:30:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:30:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:30:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:30:25,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:30:25,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864563146] [2022-07-21 04:30:25,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864563146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:30:25,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:30:25,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 04:30:25,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738406539] [2022-07-21 04:30:25,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:30:25,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:30:25,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:30:25,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:30:25,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:30:25,654 INFO L87 Difference]: Start difference. First operand 2827 states and 4584 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:30:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:30:31,394 INFO L93 Difference]: Finished difference Result 6481 states and 11008 transitions. [2022-07-21 04:30:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:30:31,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-07-21 04:30:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:30:31,412 INFO L225 Difference]: With dead ends: 6481 [2022-07-21 04:30:31,413 INFO L226 Difference]: Without dead ends: 3716 [2022-07-21 04:30:31,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:30:31,426 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 2279 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 865 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 4553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 865 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:30:31,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2290 Valid, 2646 Invalid, 4553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [865 Valid, 3688 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-21 04:30:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2022-07-21 04:30:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 2867. [2022-07-21 04:30:31,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2216 states have (on average 1.595667870036101) internal successors, (3536), 2267 states have internal predecessors, (3536), 498 states have call successors, (498), 143 states have call predecessors, (498), 152 states have return successors, (582), 478 states have call predecessors, (582), 493 states have call successors, (582) [2022-07-21 04:30:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 4616 transitions. [2022-07-21 04:30:31,913 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 4616 transitions. Word has length 131 [2022-07-21 04:30:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:30:31,913 INFO L495 AbstractCegarLoop]: Abstraction has 2867 states and 4616 transitions. [2022-07-21 04:30:31,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:30:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 4616 transitions. [2022-07-21 04:30:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-21 04:30:31,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:30:31,918 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] [2022-07-21 04:30:31,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:30:31,918 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:30:31,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:30:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash -572015969, now seen corresponding path program 1 times [2022-07-21 04:30:31,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:30:31,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102081392] [2022-07-21 04:30:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:31,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:30:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:30:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:30:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:30:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:30:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:30:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:30:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:30:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:30:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 04:30:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:30:32,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102081392] [2022-07-21 04:30:32,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102081392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:30:32,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:30:32,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:30:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304471109] [2022-07-21 04:30:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:30:32,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:30:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:30:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:30:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:30:32,458 INFO L87 Difference]: Start difference. First operand 2867 states and 4616 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 04:30:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:30:43,506 INFO L93 Difference]: Finished difference Result 9924 states and 16472 transitions. [2022-07-21 04:30:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 04:30:43,508 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 132 [2022-07-21 04:30:43,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:30:43,535 INFO L225 Difference]: With dead ends: 9924 [2022-07-21 04:30:43,535 INFO L226 Difference]: Without dead ends: 7135 [2022-07-21 04:30:43,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=392, Invalid=1330, Unknown=0, NotChecked=0, Total=1722 [2022-07-21 04:30:43,553 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 4180 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 7176 mSolverCounterSat, 2014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4222 SdHoareTripleChecker+Valid, 4471 SdHoareTripleChecker+Invalid, 9190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2014 IncrementalHoareTripleChecker+Valid, 7176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:30:43,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4222 Valid, 4471 Invalid, 9190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2014 Valid, 7176 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-07-21 04:30:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7135 states. [2022-07-21 04:30:44,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7135 to 5751. [2022-07-21 04:30:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5751 states, 4368 states have (on average 1.5897435897435896) internal successors, (6944), 4479 states have internal predecessors, (6944), 1084 states have call successors, (1084), 263 states have call predecessors, (1084), 298 states have return successors, (1254), 1052 states have call predecessors, (1254), 1079 states have call successors, (1254) [2022-07-21 04:30:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 9282 transitions. [2022-07-21 04:30:44,455 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 9282 transitions. Word has length 132 [2022-07-21 04:30:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:30:44,456 INFO L495 AbstractCegarLoop]: Abstraction has 5751 states and 9282 transitions. [2022-07-21 04:30:44,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 5 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 04:30:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 9282 transitions. [2022-07-21 04:30:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 04:30:44,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:30:44,461 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 04:30:44,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 04:30:44,462 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:30:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:30:44,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1477178101, now seen corresponding path program 1 times [2022-07-21 04:30:44,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:30:44,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015090903] [2022-07-21 04:30:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:44,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:30:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:30:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:30:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:30:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:30:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:30:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:30:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:45,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:30:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:30:45,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:30:45,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015090903] [2022-07-21 04:30:45,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015090903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:30:45,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:30:45,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 04:30:45,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555090520] [2022-07-21 04:30:45,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:30:45,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:30:45,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:30:45,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:30:45,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:30:45,035 INFO L87 Difference]: Start difference. First operand 5751 states and 9282 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:30:50,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:30:50,933 INFO L93 Difference]: Finished difference Result 12833 states and 21574 transitions. [2022-07-21 04:30:50,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:30:50,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2022-07-21 04:30:50,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:30:50,963 INFO L225 Difference]: With dead ends: 12833 [2022-07-21 04:30:50,964 INFO L226 Difference]: Without dead ends: 7128 [2022-07-21 04:30:50,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:30:50,992 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 2744 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 1067 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2756 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 4718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1067 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:30:50,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2756 Valid, 2522 Invalid, 4718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1067 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 04:30:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7128 states. [2022-07-21 04:30:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7128 to 5847. [2022-07-21 04:30:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5847 states, 4448 states have (on average 1.5755395683453237) internal successors, (7008), 4559 states have internal predecessors, (7008), 1084 states have call successors, (1084), 279 states have call predecessors, (1084), 314 states have return successors, (1270), 1052 states have call predecessors, (1270), 1079 states have call successors, (1270) [2022-07-21 04:30:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 9362 transitions. [2022-07-21 04:30:51,811 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 9362 transitions. Word has length 133 [2022-07-21 04:30:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:30:51,812 INFO L495 AbstractCegarLoop]: Abstraction has 5847 states and 9362 transitions. [2022-07-21 04:30:51,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:30:51,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 9362 transitions. [2022-07-21 04:30:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 04:30:51,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:30:51,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:30:51,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 04:30:51,818 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:30:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:30:51,818 INFO L85 PathProgramCache]: Analyzing trace with hash 921881431, now seen corresponding path program 1 times [2022-07-21 04:30:51,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:30:51,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269009911] [2022-07-21 04:30:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:30:51,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:30:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:51,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:51,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:30:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:30:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:30:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 04:30:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:30:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:30:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 04:30:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:30:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:30:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:30:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:30:52,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:30:52,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269009911] [2022-07-21 04:30:52,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269009911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:30:52,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:30:52,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 04:30:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142407148] [2022-07-21 04:30:52,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:30:52,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:30:52,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:30:52,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:30:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:30:52,487 INFO L87 Difference]: Start difference. First operand 5847 states and 9362 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:30:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:30:59,812 INFO L93 Difference]: Finished difference Result 13041 states and 21714 transitions. [2022-07-21 04:30:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:30:59,813 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2022-07-21 04:30:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:30:59,849 INFO L225 Difference]: With dead ends: 13041 [2022-07-21 04:30:59,849 INFO L226 Difference]: Without dead ends: 7240 [2022-07-21 04:30:59,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:30:59,878 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 1843 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 4143 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 4851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 4143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:30:59,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 2766 Invalid, 4851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 4143 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 04:30:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2022-07-21 04:31:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 5959. [2022-07-21 04:31:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5959 states, 4544 states have (on average 1.5598591549295775) internal successors, (7088), 4655 states have internal predecessors, (7088), 1084 states have call successors, (1084), 295 states have call predecessors, (1084), 330 states have return successors, (1286), 1052 states have call predecessors, (1286), 1079 states have call successors, (1286) [2022-07-21 04:31:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 9458 transitions. [2022-07-21 04:31:00,720 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 9458 transitions. Word has length 135 [2022-07-21 04:31:00,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:00,721 INFO L495 AbstractCegarLoop]: Abstraction has 5959 states and 9458 transitions. [2022-07-21 04:31:00,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 04:31:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 9458 transitions. [2022-07-21 04:31:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-21 04:31:00,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:00,726 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:31:00,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 04:31:00,727 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:00,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:00,727 INFO L85 PathProgramCache]: Analyzing trace with hash 650210261, now seen corresponding path program 1 times [2022-07-21 04:31:00,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:00,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010468173] [2022-07-21 04:31:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:00,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:00,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:00,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:31:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:31:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:31:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:31:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:31:01,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:01,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010468173] [2022-07-21 04:31:01,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010468173] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:31:01,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408274939] [2022-07-21 04:31:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:31:01,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:31:01,296 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 04:31:01,297 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 04:31:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:01,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:31:01,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:31:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:31:01,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:31:01,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408274939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:01,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:31:01,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-07-21 04:31:01,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234214131] [2022-07-21 04:31:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:01,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:31:01,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:31:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:31:01,805 INFO L87 Difference]: Start difference. First operand 5959 states and 9458 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 04:31:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:02,905 INFO L93 Difference]: Finished difference Result 6174 states and 9823 transitions. [2022-07-21 04:31:02,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:31:02,905 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2022-07-21 04:31:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:02,936 INFO L225 Difference]: With dead ends: 6174 [2022-07-21 04:31:02,936 INFO L226 Difference]: Without dead ends: 6159 [2022-07-21 04:31:02,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:31:02,945 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 885 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:02,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1634 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:31:02,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2022-07-21 04:31:03,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 5977. [2022-07-21 04:31:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5977 states, 4562 states have (on average 1.557650153441473) internal successors, (7106), 4673 states have internal predecessors, (7106), 1084 states have call successors, (1084), 295 states have call predecessors, (1084), 330 states have return successors, (1286), 1052 states have call predecessors, (1286), 1079 states have call successors, (1286) [2022-07-21 04:31:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5977 states to 5977 states and 9476 transitions. [2022-07-21 04:31:03,732 INFO L78 Accepts]: Start accepts. Automaton has 5977 states and 9476 transitions. Word has length 137 [2022-07-21 04:31:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:03,732 INFO L495 AbstractCegarLoop]: Abstraction has 5977 states and 9476 transitions. [2022-07-21 04:31:03,732 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 04:31:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5977 states and 9476 transitions. [2022-07-21 04:31:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-21 04:31:03,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:03,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:31:03,766 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 04:31:03,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-21 04:31:03,963 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:03,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:03,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1741325680, now seen corresponding path program 1 times [2022-07-21 04:31:03,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:03,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179207491] [2022-07-21 04:31:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:03,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:31:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:31:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:31:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:31:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:31:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:31:04,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:04,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179207491] [2022-07-21 04:31:04,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179207491] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:31:04,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022496209] [2022-07-21 04:31:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:04,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:31:04,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:31:04,550 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 04:31:04,552 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 04:31:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:04,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 04:31:04,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:31:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:31:04,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:31:04,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022496209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:04,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:31:04,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-07-21 04:31:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471879892] [2022-07-21 04:31:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:31:04,939 INFO L87 Difference]: Start difference. First operand 5977 states and 9476 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:31:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:05,942 INFO L93 Difference]: Finished difference Result 6555 states and 10255 transitions. [2022-07-21 04:31:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:31:05,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-07-21 04:31:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:05,972 INFO L225 Difference]: With dead ends: 6555 [2022-07-21 04:31:05,973 INFO L226 Difference]: Without dead ends: 6540 [2022-07-21 04:31:05,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:31:05,979 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 892 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:05,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 3656 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 04:31:05,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2022-07-21 04:31:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 6421. [2022-07-21 04:31:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6421 states, 4916 states have (on average 1.5394629780309195) internal successors, (7568), 5027 states have internal predecessors, (7568), 1132 states have call successors, (1132), 343 states have call predecessors, (1132), 372 states have return successors, (1366), 1094 states have call predecessors, (1366), 1127 states have call successors, (1366) [2022-07-21 04:31:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6421 states to 6421 states and 10066 transitions. [2022-07-21 04:31:06,846 INFO L78 Accepts]: Start accepts. Automaton has 6421 states and 10066 transitions. Word has length 143 [2022-07-21 04:31:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:06,846 INFO L495 AbstractCegarLoop]: Abstraction has 6421 states and 10066 transitions. [2022-07-21 04:31:06,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:31:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 6421 states and 10066 transitions. [2022-07-21 04:31:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 04:31:06,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:06,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:06,883 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 04:31:07,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:31:07,067 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1862067337, now seen corresponding path program 1 times [2022-07-21 04:31:07,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:07,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510273206] [2022-07-21 04:31:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:07,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:31:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:31:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:31:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:31:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:31:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:31:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:31:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:07,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510273206] [2022-07-21 04:31:07,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510273206] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:31:07,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116647275] [2022-07-21 04:31:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:07,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:31:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:31:07,600 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 04:31:07,601 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 04:31:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:07,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:31:07,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:31:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:31:08,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:31:08,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116647275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:08,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:31:08,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-21 04:31:08,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502075223] [2022-07-21 04:31:08,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:08,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:31:08,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:31:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:31:08,008 INFO L87 Difference]: Start difference. First operand 6421 states and 10066 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 04:31:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:09,234 INFO L93 Difference]: Finished difference Result 12808 states and 20448 transitions. [2022-07-21 04:31:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:31:09,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2022-07-21 04:31:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:09,259 INFO L225 Difference]: With dead ends: 12808 [2022-07-21 04:31:09,259 INFO L226 Difference]: Without dead ends: 6453 [2022-07-21 04:31:09,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:31:09,280 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 866 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:09,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 2301 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:31:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2022-07-21 04:31:10,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 6453. [2022-07-21 04:31:10,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6453 states, 4932 states have (on average 1.532035685320357) internal successors, (7556), 5059 states have internal predecessors, (7556), 1132 states have call successors, (1132), 343 states have call predecessors, (1132), 388 states have return successors, (1382), 1094 states have call predecessors, (1382), 1127 states have call successors, (1382) [2022-07-21 04:31:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6453 states to 6453 states and 10070 transitions. [2022-07-21 04:31:10,177 INFO L78 Accepts]: Start accepts. Automaton has 6453 states and 10070 transitions. Word has length 154 [2022-07-21 04:31:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:10,178 INFO L495 AbstractCegarLoop]: Abstraction has 6453 states and 10070 transitions. [2022-07-21 04:31:10,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 04:31:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6453 states and 10070 transitions. [2022-07-21 04:31:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 04:31:10,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:10,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:10,214 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 04:31:10,409 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,SelfDestructingSolverStorable26 [2022-07-21 04:31:10,409 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1015335639, now seen corresponding path program 1 times [2022-07-21 04:31:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:10,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109418909] [2022-07-21 04:31:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:10,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:10,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:31:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:10,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:10,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:31:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:31:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:31:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 04:31:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 04:31:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:31:11,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:11,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109418909] [2022-07-21 04:31:11,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109418909] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:31:11,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994641848] [2022-07-21 04:31:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:11,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:31:11,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:31:11,052 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 04:31:11,083 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 04:31:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 04:31:11,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:31:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 04:31:11,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:31:11,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994641848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:11,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:31:11,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2022-07-21 04:31:11,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730233353] [2022-07-21 04:31:11,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:11,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:31:11,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:31:11,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:31:11,591 INFO L87 Difference]: Start difference. First operand 6453 states and 10070 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-21 04:31:14,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:14,355 INFO L93 Difference]: Finished difference Result 13791 states and 21853 transitions. [2022-07-21 04:31:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:31:14,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2022-07-21 04:31:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:14,389 INFO L225 Difference]: With dead ends: 13791 [2022-07-21 04:31:14,389 INFO L226 Difference]: Without dead ends: 7424 [2022-07-21 04:31:14,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-07-21 04:31:14,412 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 2753 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 3143 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2858 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 3846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 3143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:14,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2858 Valid, 2758 Invalid, 3846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 3143 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 04:31:14,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7424 states. [2022-07-21 04:31:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7424 to 7113. [2022-07-21 04:31:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7113 states, 5414 states have (on average 1.5293683043960102) internal successors, (8280), 5569 states have internal predecessors, (8280), 1258 states have call successors, (1258), 355 states have call predecessors, (1258), 440 states have return successors, (1586), 1232 states have call predecessors, (1586), 1253 states have call successors, (1586) [2022-07-21 04:31:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 11124 transitions. [2022-07-21 04:31:15,410 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 11124 transitions. Word has length 154 [2022-07-21 04:31:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:15,411 INFO L495 AbstractCegarLoop]: Abstraction has 7113 states and 11124 transitions. [2022-07-21 04:31:15,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-21 04:31:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 11124 transitions. [2022-07-21 04:31:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 04:31:15,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:15,416 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:15,434 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 04:31:15,617 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,SelfDestructingSolverStorable27 [2022-07-21 04:31:15,617 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:15,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1945659165, now seen corresponding path program 1 times [2022-07-21 04:31:15,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:15,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887010034] [2022-07-21 04:31:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:31:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:31:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:31:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:31:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:31:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:31:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:31:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 04:31:16,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887010034] [2022-07-21 04:31:16,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887010034] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:31:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932198557] [2022-07-21 04:31:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:16,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:31:16,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:31:16,336 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 04:31:16,346 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 04:31:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:16,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 04:31:16,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:31:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:31:16,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:31:16,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932198557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:16,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:31:16,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 26 [2022-07-21 04:31:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247661986] [2022-07-21 04:31:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:16,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:31:16,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:16,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:31:16,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-07-21 04:31:16,659 INFO L87 Difference]: Start difference. First operand 7113 states and 11124 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 04:31:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:17,717 INFO L93 Difference]: Finished difference Result 7516 states and 11806 transitions. [2022-07-21 04:31:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:31:17,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 159 [2022-07-21 04:31:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:17,741 INFO L225 Difference]: With dead ends: 7516 [2022-07-21 04:31:17,741 INFO L226 Difference]: Without dead ends: 7501 [2022-07-21 04:31:17,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2022-07-21 04:31:17,747 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 64 mSDsluCounter, 2838 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:17,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 3815 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:31:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-07-21 04:31:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7167. [2022-07-21 04:31:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 5468 states have (on average 1.524140453547915) internal successors, (8334), 5623 states have internal predecessors, (8334), 1258 states have call successors, (1258), 355 states have call predecessors, (1258), 440 states have return successors, (1586), 1232 states have call predecessors, (1586), 1253 states have call successors, (1586) [2022-07-21 04:31:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 11178 transitions. [2022-07-21 04:31:18,750 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 11178 transitions. Word has length 159 [2022-07-21 04:31:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:18,750 INFO L495 AbstractCegarLoop]: Abstraction has 7167 states and 11178 transitions. [2022-07-21 04:31:18,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 04:31:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 11178 transitions. [2022-07-21 04:31:18,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 04:31:18,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:18,757 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:18,776 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 04:31:18,957 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,SelfDestructingSolverStorable28 [2022-07-21 04:31:18,958 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:18,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1079383695, now seen corresponding path program 1 times [2022-07-21 04:31:18,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:18,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66589563] [2022-07-21 04:31:18,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:18,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:31:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:31:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:31:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:31:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:31:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:31:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:31:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 04:31:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:31:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 04:31:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 04:31:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 04:31:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 04:31:19,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:19,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66589563] [2022-07-21 04:31:19,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66589563] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:31:19,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912336572] [2022-07-21 04:31:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:19,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:31:19,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:31:19,628 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 04:31:19,636 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 04:31:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:19,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 04:31:19,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:31:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-21 04:31:20,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:31:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-21 04:31:20,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912336572] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:31:20,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:31:20,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 8] total 29 [2022-07-21 04:31:20,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705222595] [2022-07-21 04:31:20,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:31:20,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-21 04:31:20,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:20,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-21 04:31:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-07-21 04:31:20,810 INFO L87 Difference]: Start difference. First operand 7167 states and 11178 transitions. Second operand has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 20 states have internal predecessors, (265), 10 states have call successors, (56), 9 states have call predecessors, (56), 15 states have return successors, (56), 16 states have call predecessors, (56), 9 states have call successors, (56) [2022-07-21 04:32:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:03,881 INFO L93 Difference]: Finished difference Result 38693 states and 67565 transitions. [2022-07-21 04:32:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-07-21 04:32:03,882 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 20 states have internal predecessors, (265), 10 states have call successors, (56), 9 states have call predecessors, (56), 15 states have return successors, (56), 16 states have call predecessors, (56), 9 states have call successors, (56) Word has length 202 [2022-07-21 04:32:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:04,032 INFO L225 Difference]: With dead ends: 38693 [2022-07-21 04:32:04,032 INFO L226 Difference]: Without dead ends: 31604 [2022-07-21 04:32:04,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 447 SyntacticMatches, 4 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6154 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=2308, Invalid=16598, Unknown=0, NotChecked=0, Total=18906 [2022-07-21 04:32:04,105 INFO L413 NwaCegarLoop]: 2763 mSDtfsCounter, 14013 mSDsluCounter, 15504 mSDsCounter, 0 mSdLazyCounter, 42347 mSolverCounterSat, 7194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14013 SdHoareTripleChecker+Valid, 18267 SdHoareTripleChecker+Invalid, 49541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 7194 IncrementalHoareTripleChecker+Valid, 42347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:04,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14013 Valid, 18267 Invalid, 49541 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [7194 Valid, 42347 Invalid, 0 Unknown, 0 Unchecked, 27.2s Time] [2022-07-21 04:32:04,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31604 states. [2022-07-21 04:32:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31604 to 23377. [2022-07-21 04:32:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23377 states, 17672 states have (on average 1.5216161158895427) internal successors, (26890), 18223 states have internal predecessors, (26890), 4300 states have call successors, (4300), 1031 states have call predecessors, (4300), 1404 states have return successors, (5918), 4294 states have call predecessors, (5918), 4295 states have call successors, (5918) [2022-07-21 04:32:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23377 states to 23377 states and 37108 transitions. [2022-07-21 04:32:08,011 INFO L78 Accepts]: Start accepts. Automaton has 23377 states and 37108 transitions. Word has length 202 [2022-07-21 04:32:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:08,011 INFO L495 AbstractCegarLoop]: Abstraction has 23377 states and 37108 transitions. [2022-07-21 04:32:08,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 20 states have internal predecessors, (265), 10 states have call successors, (56), 9 states have call predecessors, (56), 15 states have return successors, (56), 16 states have call predecessors, (56), 9 states have call successors, (56) [2022-07-21 04:32:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 23377 states and 37108 transitions. [2022-07-21 04:32:08,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-21 04:32:08,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:08,035 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:32:08,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 04:32:08,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:32:08,236 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:08,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:08,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1929943045, now seen corresponding path program 1 times [2022-07-21 04:32:08,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:08,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78860566] [2022-07-21 04:32:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:08,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:32:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:32:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:32:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:32:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:32:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:32:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:32:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:32:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:32:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:32:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 04:32:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 04:32:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 04:32:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:32:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:32:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:32:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:32:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:32:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:32:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:32:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-21 04:32:08,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:08,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78860566] [2022-07-21 04:32:08,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78860566] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:32:08,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247980913] [2022-07-21 04:32:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:08,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:32:08,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:32:08,816 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 04:32:08,817 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 04:32:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:09,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 2565 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:32:09,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:32:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 04:32:09,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:32:09,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247980913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:09,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:32:09,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2022-07-21 04:32:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019324499] [2022-07-21 04:32:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:09,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:32:09,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:09,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:32:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:32:09,212 INFO L87 Difference]: Start difference. First operand 23377 states and 37108 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27)