./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec13_product32.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 e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:41:05,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:41:05,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:41:05,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:41:05,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:41:05,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:41:05,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:41:05,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:41:05,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:41:05,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:41:05,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:41:05,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:41:05,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:41:05,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:41:05,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:41:05,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:41:05,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:41:05,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:41:05,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:41:05,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:41:05,172 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:41:05,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:41:05,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:41:05,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:41:05,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:41:05,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:41:05,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:41:05,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:41:05,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:41:05,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:41:05,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:41:05,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:41:05,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:41:05,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:41:05,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:41:05,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:41:05,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:41:05,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:41:05,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:41:05,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:41:05,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:41:05,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:41:05,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:41:05,210 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:41:05,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:41:05,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:41:05,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:41:05,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:41:05,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:41:05,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:41:05,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:41:05,213 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:41:05,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:41:05,213 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:41:05,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:41:05,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:41:05,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:41:05,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:41:05,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:41:05,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:41:05,214 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:41:05,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:41:05,215 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:41:05,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:41:05,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:41:05,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:41:05,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:41:05,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:41:05,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:41:05,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:41:05,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:41:05,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:41:05,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:41:05,220 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:41:05,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:41:05,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:41:05,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb [2022-07-19 16:41:05,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:41:05,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:41:05,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:41:05,454 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:41:05,455 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:41:05,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2022-07-19 16:41:05,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d437e3c7e/46818873758642518f678fbef6ae4d5c/FLAG030224f60 [2022-07-19 16:41:05,925 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:41:05,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2022-07-19 16:41:05,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d437e3c7e/46818873758642518f678fbef6ae4d5c/FLAG030224f60 [2022-07-19 16:41:05,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d437e3c7e/46818873758642518f678fbef6ae4d5c [2022-07-19 16:41:05,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:41:05,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:41:05,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:41:05,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:41:05,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:41:05,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:41:05" (1/1) ... [2022-07-19 16:41:05,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e24528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:05, skipping insertion in model container [2022-07-19 16:41:05,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:41:05" (1/1) ... [2022-07-19 16:41:05,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:41:06,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:41:06,141 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_spec13_product32.cil.c[1546,1559] [2022-07-19 16:41:06,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:41:06,358 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:41:06,366 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_spec13_product32.cil.c[1546,1559] [2022-07-19 16:41:06,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:41:06,439 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:41:06,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06 WrapperNode [2022-07-19 16:41:06,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:41:06,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:41:06,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:41:06,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:41:06,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,512 INFO L137 Inliner]: procedures = 97, calls = 354, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 938 [2022-07-19 16:41:06,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:41:06,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:41:06,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:41:06,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:41:06,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:41:06,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:41:06,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:41:06,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:41:06,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (1/1) ... [2022-07-19 16:41:06,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:41:06,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:06,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 16:41:06,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 16:41:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-19 16:41:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-19 16:41:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-07-19 16:41:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-07-19 16:41:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:41:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:41:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:41:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:41:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-19 16:41:06,669 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-19 16:41:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:41:06,669 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:41:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:41:06,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:41:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:41:06,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:41:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-19 16:41:06,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-19 16:41:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-19 16:41:06,670 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-19 16:41:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:41:06,670 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:41:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:41:06,670 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:41:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-19 16:41:06,671 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-19 16:41:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:41:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-19 16:41:06,671 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-19 16:41:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-19 16:41:06,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-19 16:41:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-19 16:41:06,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-19 16:41:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-19 16:41:06,672 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-19 16:41:06,672 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:41:06,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:41:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:41:06,673 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:41:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:41:06,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:41:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:41:06,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:41:06,673 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:41:06,674 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:41:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:41:06,674 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:41:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:41:06,674 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:41:06,674 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:41:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:41:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:41:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:41:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:41:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:41:06,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:41:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:41:06,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:41:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:41:06,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:41:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-19 16:41:06,679 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-19 16:41:06,823 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:41:06,830 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:41:07,646 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:41:07,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:41:07,664 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 16:41:07,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:41:07 BoogieIcfgContainer [2022-07-19 16:41:07,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:41:07,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:41:07,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:41:07,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:41:07,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:41:05" (1/3) ... [2022-07-19 16:41:07,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484992b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:41:07, skipping insertion in model container [2022-07-19 16:41:07,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:41:06" (2/3) ... [2022-07-19 16:41:07,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484992b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:41:07, skipping insertion in model container [2022-07-19 16:41:07,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:41:07" (3/3) ... [2022-07-19 16:41:07,684 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2022-07-19 16:41:07,695 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:41:07,695 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:41:07,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:41:07,759 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@5475f4bd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@461a8917 [2022-07-19 16:41:07,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:41:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 637 states, 496 states have (on average 1.6733870967741935) internal successors, (830), 516 states have internal predecessors, (830), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2022-07-19 16:41:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 16:41:07,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:07,784 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:07,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:07,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash -523828197, now seen corresponding path program 1 times [2022-07-19 16:41:07,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:07,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669650931] [2022-07-19 16:41:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:07,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:41:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 16:41:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:41:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:41:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:41:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 16:41:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 16:41:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:41:08,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:08,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669650931] [2022-07-19 16:41:08,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669650931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:08,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108285251] [2022-07-19 16:41:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:08,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:08,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:08,483 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) [2022-07-19 16:41:08,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 16:41:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:08,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:41:08,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 16:41:08,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:08,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108285251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:08,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:08,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-19 16:41:08,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558045549] [2022-07-19 16:41:08,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:08,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:41:08,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:08,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:41:08,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:41:08,866 INFO L87 Difference]: Start difference. First operand has 637 states, 496 states have (on average 1.6733870967741935) internal successors, (830), 516 states have internal predecessors, (830), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:41:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:08,996 INFO L93 Difference]: Finished difference Result 1273 states and 2116 transitions. [2022-07-19 16:41:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:41:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-07-19 16:41:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:09,022 INFO L225 Difference]: With dead ends: 1273 [2022-07-19 16:41:09,022 INFO L226 Difference]: Without dead ends: 636 [2022-07-19 16:41:09,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:41:09,040 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 26 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:09,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3060 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:41:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-07-19 16:41:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 636. [2022-07-19 16:41:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 497 states have (on average 1.6579476861167002) internal successors, (824), 515 states have internal predecessors, (824), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2022-07-19 16:41:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1041 transitions. [2022-07-19 16:41:09,153 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1041 transitions. Word has length 99 [2022-07-19 16:41:09,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:09,154 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1041 transitions. [2022-07-19 16:41:09,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:41:09,154 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1041 transitions. [2022-07-19 16:41:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-19 16:41:09,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:09,164 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:09,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:09,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-19 16:41:09,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:09,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2001716048, now seen corresponding path program 1 times [2022-07-19 16:41:09,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:09,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932682683] [2022-07-19 16:41:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:09,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 16:41:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:41:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 16:41:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:41:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:41:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 16:41:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 16:41:09,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:09,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932682683] [2022-07-19 16:41:09,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932682683] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:09,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54350133] [2022-07-19 16:41:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:09,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:09,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:09,612 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) [2022-07-19 16:41:09,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 16:41:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:09,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:41:09,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:41:09,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:09,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54350133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:09,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:09,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-19 16:41:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768986953] [2022-07-19 16:41:09,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:09,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:41:09,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:09,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:41:09,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:41:09,915 INFO L87 Difference]: Start difference. First operand 636 states and 1041 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:10,018 INFO L93 Difference]: Finished difference Result 1286 states and 2109 transitions. [2022-07-19 16:41:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:41:10,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 85 [2022-07-19 16:41:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:10,038 INFO L225 Difference]: With dead ends: 1286 [2022-07-19 16:41:10,038 INFO L226 Difference]: Without dead ends: 660 [2022-07-19 16:41:10,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:41:10,043 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 119 mSDsluCounter, 4983 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 6002 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:10,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 6002 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-07-19 16:41:10,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 649. [2022-07-19 16:41:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 507 states have (on average 1.6548323471400395) internal successors, (839), 527 states have internal predecessors, (839), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2022-07-19 16:41:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1063 transitions. [2022-07-19 16:41:10,083 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1063 transitions. Word has length 85 [2022-07-19 16:41:10,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:10,083 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1063 transitions. [2022-07-19 16:41:10,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:10,083 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1063 transitions. [2022-07-19 16:41:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 16:41:10,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:10,088 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:10,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:10,303 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,SelfDestructingSolverStorable1 [2022-07-19 16:41:10,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1546466611, now seen corresponding path program 1 times [2022-07-19 16:41:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:10,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482708406] [2022-07-19 16:41:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 16:41:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:41:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 16:41:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:41:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:41:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:41:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 16:41:10,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:10,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482708406] [2022-07-19 16:41:10,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482708406] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:10,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857685597] [2022-07-19 16:41:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:10,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:10,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:10,532 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) [2022-07-19 16:41:10,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 16:41:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:10,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:41:10,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:41:10,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:10,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857685597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:10,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:10,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-19 16:41:10,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095362716] [2022-07-19 16:41:10,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:10,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:41:10,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:10,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:41:10,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:41:10,820 INFO L87 Difference]: Start difference. First operand 649 states and 1063 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:10,910 INFO L93 Difference]: Finished difference Result 1306 states and 2142 transitions. [2022-07-19 16:41:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:41:10,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 86 [2022-07-19 16:41:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:10,915 INFO L225 Difference]: With dead ends: 1306 [2022-07-19 16:41:10,916 INFO L226 Difference]: Without dead ends: 669 [2022-07-19 16:41:10,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:41:10,919 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 130 mSDsluCounter, 4980 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 6001 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:10,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 6001 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:41:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-07-19 16:41:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 649. [2022-07-19 16:41:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 507 states have (on average 1.6548323471400395) internal successors, (839), 527 states have internal predecessors, (839), 111 states have call successors, (111), 30 states have call predecessors, (111), 30 states have return successors, (113), 105 states have call predecessors, (113), 108 states have call successors, (113) [2022-07-19 16:41:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1063 transitions. [2022-07-19 16:41:10,940 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1063 transitions. Word has length 86 [2022-07-19 16:41:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:10,941 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1063 transitions. [2022-07-19 16:41:10,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1063 transitions. [2022-07-19 16:41:10,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 16:41:10,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:10,943 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:10,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:11,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash -712971247, now seen corresponding path program 1 times [2022-07-19 16:41:11,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:11,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692759872] [2022-07-19 16:41:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:11,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:41:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 16:41:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:41:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 16:41:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:41:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:41:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:41:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 16:41:11,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:11,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692759872] [2022-07-19 16:41:11,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692759872] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:11,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61346657] [2022-07-19 16:41:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:11,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:11,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:11,319 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) [2022-07-19 16:41:11,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 16:41:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:41:11,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 16:41:11,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:11,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61346657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:11,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:11,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-07-19 16:41:11,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355943835] [2022-07-19 16:41:11,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:11,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:41:11,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:11,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:41:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:41:11,539 INFO L87 Difference]: Start difference. First operand 649 states and 1063 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 16:41:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:11,594 INFO L93 Difference]: Finished difference Result 1301 states and 2132 transitions. [2022-07-19 16:41:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:41:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-07-19 16:41:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:11,600 INFO L225 Difference]: With dead ends: 1301 [2022-07-19 16:41:11,600 INFO L226 Difference]: Without dead ends: 660 [2022-07-19 16:41:11,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:41:11,605 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 20 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:11,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3028 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:41:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-07-19 16:41:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 658. [2022-07-19 16:41:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 515 states have (on average 1.6466019417475728) internal successors, (848), 535 states have internal predecessors, (848), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2022-07-19 16:41:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1071 transitions. [2022-07-19 16:41:11,630 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1071 transitions. Word has length 86 [2022-07-19 16:41:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:11,630 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1071 transitions. [2022-07-19 16:41:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 16:41:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1071 transitions. [2022-07-19 16:41:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 16:41:11,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:11,636 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:11,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:11,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:11,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:11,856 INFO L85 PathProgramCache]: Analyzing trace with hash 309689612, now seen corresponding path program 1 times [2022-07-19 16:41:11,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:11,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302015073] [2022-07-19 16:41:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:11,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:11,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:41:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:41:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:41:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:41:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:41:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 16:41:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 16:41:12,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:12,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302015073] [2022-07-19 16:41:12,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302015073] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:12,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409419950] [2022-07-19 16:41:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:12,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:12,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:12,039 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) [2022-07-19 16:41:12,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 16:41:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:41:12,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:41:12,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:12,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409419950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:12,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:12,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-19 16:41:12,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940228756] [2022-07-19 16:41:12,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:12,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:41:12,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:12,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:41:12,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:41:12,314 INFO L87 Difference]: Start difference. First operand 658 states and 1071 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:12,408 INFO L93 Difference]: Finished difference Result 1315 states and 2145 transitions. [2022-07-19 16:41:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:41:12,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2022-07-19 16:41:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:12,413 INFO L225 Difference]: With dead ends: 1315 [2022-07-19 16:41:12,413 INFO L226 Difference]: Without dead ends: 680 [2022-07-19 16:41:12,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:41:12,416 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 141 mSDsluCounter, 4954 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:12,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 5972 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-07-19 16:41:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 658. [2022-07-19 16:41:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 515 states have (on average 1.6466019417475728) internal successors, (848), 535 states have internal predecessors, (848), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2022-07-19 16:41:12,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1071 transitions. [2022-07-19 16:41:12,434 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1071 transitions. Word has length 87 [2022-07-19 16:41:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:12,434 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1071 transitions. [2022-07-19 16:41:12,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1071 transitions. [2022-07-19 16:41:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-19 16:41:12,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:12,436 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:12,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:12,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:12,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:12,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2064556550, now seen corresponding path program 1 times [2022-07-19 16:41:12,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:12,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996331237] [2022-07-19 16:41:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:12,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 16:41:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:41:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 16:41:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:41:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:41:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 16:41:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 16:41:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 16:41:12,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:12,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996331237] [2022-07-19 16:41:12,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996331237] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:12,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683593900] [2022-07-19 16:41:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:12,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:12,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:12,904 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) [2022-07-19 16:41:12,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 16:41:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:41:13,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:41:13,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:13,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683593900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:13,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:13,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-19 16:41:13,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747982522] [2022-07-19 16:41:13,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:13,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:41:13,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:13,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:41:13,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:41:13,170 INFO L87 Difference]: Start difference. First operand 658 states and 1071 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:41:13,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:13,302 INFO L93 Difference]: Finished difference Result 1347 states and 2213 transitions. [2022-07-19 16:41:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:41:13,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2022-07-19 16:41:13,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:13,306 INFO L225 Difference]: With dead ends: 1347 [2022-07-19 16:41:13,307 INFO L226 Difference]: Without dead ends: 712 [2022-07-19 16:41:13,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:41:13,309 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 167 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:13,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 2871 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-07-19 16:41:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 703. [2022-07-19 16:41:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.667262969588551) internal successors, (932), 579 states have internal predecessors, (932), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-19 16:41:13,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1154 transitions. [2022-07-19 16:41:13,333 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1154 transitions. Word has length 104 [2022-07-19 16:41:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:13,334 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1154 transitions. [2022-07-19 16:41:13,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:41:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1154 transitions. [2022-07-19 16:41:13,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-19 16:41:13,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:13,336 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:13,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:13,551 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash 472783284, now seen corresponding path program 1 times [2022-07-19 16:41:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:13,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981583541] [2022-07-19 16:41:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:13,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 16:41:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:41:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:41:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 16:41:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:41:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 16:41:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 16:41:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:13,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981583541] [2022-07-19 16:41:13,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981583541] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:13,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722423502] [2022-07-19 16:41:13,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:13,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:13,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:13,685 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) [2022-07-19 16:41:13,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 16:41:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:13,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 16:41:13,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:41:13,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:13,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722423502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:13,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:13,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-19 16:41:13,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663945690] [2022-07-19 16:41:13,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:13,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:41:13,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:41:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:41:13,948 INFO L87 Difference]: Start difference. First operand 703 states and 1154 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:14,089 INFO L93 Difference]: Finished difference Result 1417 states and 2328 transitions. [2022-07-19 16:41:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:41:14,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2022-07-19 16:41:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:14,093 INFO L225 Difference]: With dead ends: 1417 [2022-07-19 16:41:14,094 INFO L226 Difference]: Without dead ends: 737 [2022-07-19 16:41:14,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:41:14,097 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 140 mSDsluCounter, 5940 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6948 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:14,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6948 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:14,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-07-19 16:41:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 703. [2022-07-19 16:41:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.667262969588551) internal successors, (932), 579 states have internal predecessors, (932), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-19 16:41:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1154 transitions. [2022-07-19 16:41:14,116 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1154 transitions. Word has length 89 [2022-07-19 16:41:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:14,117 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1154 transitions. [2022-07-19 16:41:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1154 transitions. [2022-07-19 16:41:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 16:41:14,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:14,118 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:14,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:14,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:14,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1129503431, now seen corresponding path program 1 times [2022-07-19 16:41:14,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:14,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546085388] [2022-07-19 16:41:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:41:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:41:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 16:41:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 16:41:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:41:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 16:41:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 16:41:14,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:14,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546085388] [2022-07-19 16:41:14,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546085388] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:14,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842082844] [2022-07-19 16:41:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:14,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:14,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:14,498 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) [2022-07-19 16:41:14,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 16:41:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:14,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 16:41:14,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:41:14,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:14,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842082844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:14,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:14,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-19 16:41:14,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877825058] [2022-07-19 16:41:14,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:14,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:41:14,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:14,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:41:14,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:41:14,777 INFO L87 Difference]: Start difference. First operand 703 states and 1154 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:14,921 INFO L93 Difference]: Finished difference Result 1417 states and 2328 transitions. [2022-07-19 16:41:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:41:14,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2022-07-19 16:41:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:14,926 INFO L225 Difference]: With dead ends: 1417 [2022-07-19 16:41:14,926 INFO L226 Difference]: Without dead ends: 737 [2022-07-19 16:41:14,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:41:14,929 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 150 mSDsluCounter, 5928 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6936 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:14,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 6936 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-07-19 16:41:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 703. [2022-07-19 16:41:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.667262969588551) internal successors, (932), 579 states have internal predecessors, (932), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-19 16:41:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1154 transitions. [2022-07-19 16:41:14,946 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1154 transitions. Word has length 90 [2022-07-19 16:41:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:14,947 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1154 transitions. [2022-07-19 16:41:14,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1154 transitions. [2022-07-19 16:41:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-19 16:41:14,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:14,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:14,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:15,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-19 16:41:15,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash -568339088, now seen corresponding path program 1 times [2022-07-19 16:41:15,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:15,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960385080] [2022-07-19 16:41:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:15,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:41:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:41:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:41:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 16:41:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 16:41:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 16:41:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 16:41:15,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:15,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960385080] [2022-07-19 16:41:15,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960385080] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:15,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788419127] [2022-07-19 16:41:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:15,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:15,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:15,418 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:15,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 16:41:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:15,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 16:41:15,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 16:41:15,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:15,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788419127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:15,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:15,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-19 16:41:15,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678461282] [2022-07-19 16:41:15,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:15,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:41:15,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:15,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:41:15,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:41:15,726 INFO L87 Difference]: Start difference. First operand 703 states and 1154 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:41:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:15,860 INFO L93 Difference]: Finished difference Result 1408 states and 2313 transitions. [2022-07-19 16:41:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:41:15,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2022-07-19 16:41:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:15,864 INFO L225 Difference]: With dead ends: 1408 [2022-07-19 16:41:15,864 INFO L226 Difference]: Without dead ends: 728 [2022-07-19 16:41:15,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:41:15,868 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 160 mSDsluCounter, 5916 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6924 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:15,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 6924 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-07-19 16:41:15,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 703. [2022-07-19 16:41:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.667262969588551) internal successors, (932), 579 states have internal predecessors, (932), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-19 16:41:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1154 transitions. [2022-07-19 16:41:15,887 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1154 transitions. Word has length 107 [2022-07-19 16:41:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:15,888 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1154 transitions. [2022-07-19 16:41:15,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:41:15,888 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1154 transitions. [2022-07-19 16:41:15,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 16:41:15,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:15,889 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:15,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:16,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:16,103 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:16,104 INFO L85 PathProgramCache]: Analyzing trace with hash 604240503, now seen corresponding path program 1 times [2022-07-19 16:41:16,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:16,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566101312] [2022-07-19 16:41:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:41:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:41:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 16:41:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 16:41:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 16:41:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:16,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566101312] [2022-07-19 16:41:16,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566101312] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:16,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493467788] [2022-07-19 16:41:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:16,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:16,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:16,210 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:16,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 16:41:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:41:16,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 16:41:16,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:16,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493467788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:16,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:16,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-07-19 16:41:16,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385711625] [2022-07-19 16:41:16,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:16,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:41:16,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:41:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:41:16,441 INFO L87 Difference]: Start difference. First operand 703 states and 1154 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 16:41:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:16,487 INFO L93 Difference]: Finished difference Result 1372 states and 2260 transitions. [2022-07-19 16:41:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:41:16,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-07-19 16:41:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:16,491 INFO L225 Difference]: With dead ends: 1372 [2022-07-19 16:41:16,491 INFO L226 Difference]: Without dead ends: 703 [2022-07-19 16:41:16,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:41:16,495 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 35 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:16,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3026 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:41:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-07-19 16:41:16,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2022-07-19 16:41:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.6583184257602863) internal successors, (927), 579 states have internal predecessors, (927), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2022-07-19 16:41:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1149 transitions. [2022-07-19 16:41:16,511 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1149 transitions. Word has length 91 [2022-07-19 16:41:16,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:16,511 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1149 transitions. [2022-07-19 16:41:16,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 16:41:16,511 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1149 transitions. [2022-07-19 16:41:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 16:41:16,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:16,513 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:16,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:16,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 16:41:16,727 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash -368202784, now seen corresponding path program 1 times [2022-07-19 16:41:16,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:16,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638026178] [2022-07-19 16:41:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:16,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 16:41:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:41:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:41:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 16:41:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 16:41:16,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:16,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638026178] [2022-07-19 16:41:16,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638026178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:16,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381630062] [2022-07-19 16:41:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:16,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:16,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:16,860 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:16,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 16:41:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:41:17,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 16:41:17,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:17,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381630062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:17,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:17,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-19 16:41:17,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853816237] [2022-07-19 16:41:17,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:17,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:41:17,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:41:17,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:41:17,112 INFO L87 Difference]: Start difference. First operand 703 states and 1149 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:17,198 INFO L93 Difference]: Finished difference Result 1340 states and 2192 transitions. [2022-07-19 16:41:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:41:17,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 92 [2022-07-19 16:41:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:17,203 INFO L225 Difference]: With dead ends: 1340 [2022-07-19 16:41:17,203 INFO L226 Difference]: Without dead ends: 729 [2022-07-19 16:41:17,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:41:17,206 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 116 mSDsluCounter, 4968 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 5983 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:17,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 5983 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-07-19 16:41:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 716. [2022-07-19 16:41:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 569 states have (on average 1.655536028119508) internal successors, (942), 591 states have internal predecessors, (942), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2022-07-19 16:41:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1170 transitions. [2022-07-19 16:41:17,223 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1170 transitions. Word has length 92 [2022-07-19 16:41:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:17,223 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1170 transitions. [2022-07-19 16:41:17,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1170 transitions. [2022-07-19 16:41:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 16:41:17,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:17,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:17,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:17,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 16:41:17,443 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:17,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash -19104580, now seen corresponding path program 1 times [2022-07-19 16:41:17,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:17,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510850033] [2022-07-19 16:41:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 16:41:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 16:41:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:41:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 16:41:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 16:41:17,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:17,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510850033] [2022-07-19 16:41:17,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510850033] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:17,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521766499] [2022-07-19 16:41:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:17,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:17,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:17,724 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:17,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 16:41:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:17,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:41:17,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 16:41:18,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:18,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521766499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:18,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:18,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-19 16:41:18,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705320319] [2022-07-19 16:41:18,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:18,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:41:18,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:41:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:41:18,004 INFO L87 Difference]: Start difference. First operand 716 states and 1170 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:41:18,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:18,093 INFO L93 Difference]: Finished difference Result 1349 states and 2207 transitions. [2022-07-19 16:41:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:41:18,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2022-07-19 16:41:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:18,097 INFO L225 Difference]: With dead ends: 1349 [2022-07-19 16:41:18,097 INFO L226 Difference]: Without dead ends: 738 [2022-07-19 16:41:18,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:41:18,100 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 127 mSDsluCounter, 4956 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 5971 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:18,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 5971 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:18,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-07-19 16:41:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 716. [2022-07-19 16:41:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 569 states have (on average 1.655536028119508) internal successors, (942), 591 states have internal predecessors, (942), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2022-07-19 16:41:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1170 transitions. [2022-07-19 16:41:18,117 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1170 transitions. Word has length 109 [2022-07-19 16:41:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:18,118 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1170 transitions. [2022-07-19 16:41:18,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:41:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1170 transitions. [2022-07-19 16:41:18,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 16:41:18,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:18,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:18,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:18,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 16:41:18,339 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:18,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash 598337522, now seen corresponding path program 1 times [2022-07-19 16:41:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:18,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583450620] [2022-07-19 16:41:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:18,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 16:41:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 16:41:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 16:41:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 16:41:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 16:41:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 16:41:18,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:18,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583450620] [2022-07-19 16:41:18,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583450620] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:18,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729944197] [2022-07-19 16:41:18,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:18,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:18,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:18,578 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:18,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 16:41:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:18,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:41:18,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:41:18,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:18,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729944197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:18,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:18,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-19 16:41:18,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107352518] [2022-07-19 16:41:18,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:18,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:41:18,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:18,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:41:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:41:18,830 INFO L87 Difference]: Start difference. First operand 716 states and 1170 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:41:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:18,863 INFO L93 Difference]: Finished difference Result 1394 states and 2290 transitions. [2022-07-19 16:41:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 16:41:18,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 109 [2022-07-19 16:41:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:18,867 INFO L225 Difference]: With dead ends: 1394 [2022-07-19 16:41:18,868 INFO L226 Difference]: Without dead ends: 716 [2022-07-19 16:41:18,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:41:18,871 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 10 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:18,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3028 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:41:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-07-19 16:41:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2022-07-19 16:41:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 569 states have (on average 1.6502636203866432) internal successors, (939), 591 states have internal predecessors, (939), 112 states have call successors, (112), 32 states have call predecessors, (112), 34 states have return successors, (116), 106 states have call predecessors, (116), 109 states have call successors, (116) [2022-07-19 16:41:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1167 transitions. [2022-07-19 16:41:18,888 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1167 transitions. Word has length 109 [2022-07-19 16:41:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:18,888 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1167 transitions. [2022-07-19 16:41:18,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:41:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1167 transitions. [2022-07-19 16:41:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 16:41:18,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:18,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:18,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:19,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 16:41:19,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:19,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1058091269, now seen corresponding path program 1 times [2022-07-19 16:41:19,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:19,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714380235] [2022-07-19 16:41:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:19,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 16:41:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:41:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 16:41:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 16:41:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 16:41:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 16:41:19,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:19,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714380235] [2022-07-19 16:41:19,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714380235] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:19,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654471820] [2022-07-19 16:41:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:19,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:19,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:19,371 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:19,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 16:41:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:19,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 16:41:19,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 16:41:19,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:19,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654471820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:19,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:19,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-19 16:41:19,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977779530] [2022-07-19 16:41:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:19,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:41:19,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:19,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:41:19,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:41:19,624 INFO L87 Difference]: Start difference. First operand 716 states and 1167 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:41:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:19,739 INFO L93 Difference]: Finished difference Result 1390 states and 2285 transitions. [2022-07-19 16:41:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:41:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2022-07-19 16:41:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:19,743 INFO L225 Difference]: With dead ends: 1390 [2022-07-19 16:41:19,743 INFO L226 Difference]: Without dead ends: 779 [2022-07-19 16:41:19,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:41:19,747 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 237 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:19,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2851 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-07-19 16:41:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 761. [2022-07-19 16:41:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 613 states have (on average 1.6688417618270799) internal successors, (1023), 635 states have internal predecessors, (1023), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2022-07-19 16:41:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1248 transitions. [2022-07-19 16:41:19,768 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1248 transitions. Word has length 110 [2022-07-19 16:41:19,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:19,769 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1248 transitions. [2022-07-19 16:41:19,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:41:19,769 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1248 transitions. [2022-07-19 16:41:19,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 16:41:19,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:19,770 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:19,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:19,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:19,987 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:19,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1700520794, now seen corresponding path program 1 times [2022-07-19 16:41:19,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:19,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934243845] [2022-07-19 16:41:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:19,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 16:41:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:41:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 16:41:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 16:41:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 16:41:20,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:20,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934243845] [2022-07-19 16:41:20,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934243845] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:20,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73331127] [2022-07-19 16:41:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:20,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:20,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:20,097 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:20,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 16:41:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 16:41:20,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 16:41:20,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:20,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73331127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:20,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:20,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-07-19 16:41:20,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454556056] [2022-07-19 16:41:20,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:20,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:41:20,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:20,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:41:20,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:41:20,346 INFO L87 Difference]: Start difference. First operand 761 states and 1248 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:20,467 INFO L93 Difference]: Finished difference Result 1406 states and 2301 transitions. [2022-07-19 16:41:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:41:20,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-07-19 16:41:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:20,471 INFO L225 Difference]: With dead ends: 1406 [2022-07-19 16:41:20,471 INFO L226 Difference]: Without dead ends: 795 [2022-07-19 16:41:20,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:41:20,474 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 138 mSDsluCounter, 5901 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6901 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:20,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 6901 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:20,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-07-19 16:41:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 761. [2022-07-19 16:41:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 613 states have (on average 1.6688417618270799) internal successors, (1023), 635 states have internal predecessors, (1023), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2022-07-19 16:41:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1248 transitions. [2022-07-19 16:41:20,508 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1248 transitions. Word has length 94 [2022-07-19 16:41:20,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:20,508 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1248 transitions. [2022-07-19 16:41:20,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:41:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1248 transitions. [2022-07-19 16:41:20,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 16:41:20,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:20,509 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:20,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:20,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 16:41:20,723 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1807208768, now seen corresponding path program 1 times [2022-07-19 16:41:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:20,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387136605] [2022-07-19 16:41:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 16:41:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:41:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:41:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 16:41:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 16:41:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 16:41:20,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:20,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387136605] [2022-07-19 16:41:20,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387136605] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:20,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535539840] [2022-07-19 16:41:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:20,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:20,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:20,993 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:20,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 16:41:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 16:41:21,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 16:41:21,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:21,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535539840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:21,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:21,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-07-19 16:41:21,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777357963] [2022-07-19 16:41:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:21,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:41:21,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:21,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:41:21,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:41:21,270 INFO L87 Difference]: Start difference. First operand 761 states and 1248 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:41:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:21,400 INFO L93 Difference]: Finished difference Result 1397 states and 2287 transitions. [2022-07-19 16:41:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:41:21,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2022-07-19 16:41:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:21,404 INFO L225 Difference]: With dead ends: 1397 [2022-07-19 16:41:21,405 INFO L226 Difference]: Without dead ends: 786 [2022-07-19 16:41:21,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:41:21,407 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 148 mSDsluCounter, 5889 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6889 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:21,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 6889 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-07-19 16:41:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 761. [2022-07-19 16:41:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 613 states have (on average 1.6688417618270799) internal successors, (1023), 635 states have internal predecessors, (1023), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2022-07-19 16:41:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1248 transitions. [2022-07-19 16:41:21,424 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1248 transitions. Word has length 111 [2022-07-19 16:41:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:21,425 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1248 transitions. [2022-07-19 16:41:21,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:41:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1248 transitions. [2022-07-19 16:41:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 16:41:21,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:21,426 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 16:41:21,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:21,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 16:41:21,639 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:21,640 INFO L85 PathProgramCache]: Analyzing trace with hash -241867701, now seen corresponding path program 1 times [2022-07-19 16:41:21,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:21,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736931900] [2022-07-19 16:41:21,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:21,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:41:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:41:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 16:41:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 16:41:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 16:41:21,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:21,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736931900] [2022-07-19 16:41:21,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736931900] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:21,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367873906] [2022-07-19 16:41:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:21,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:21,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:21,784 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:21,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 16:41:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:21,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:41:21,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 16:41:22,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:22,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367873906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:22,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:22,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-07-19 16:41:22,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282585292] [2022-07-19 16:41:22,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 16:41:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 16:41:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:41:22,132 INFO L87 Difference]: Start difference. First operand 761 states and 1248 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 16:41:22,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:22,214 INFO L93 Difference]: Finished difference Result 1962 states and 3238 transitions. [2022-07-19 16:41:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 16:41:22,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2022-07-19 16:41:22,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:22,221 INFO L225 Difference]: With dead ends: 1962 [2022-07-19 16:41:22,221 INFO L226 Difference]: Without dead ends: 1355 [2022-07-19 16:41:22,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:41:22,224 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 933 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:22,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 2163 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:41:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2022-07-19 16:41:22,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1290. [2022-07-19 16:41:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1038 states have (on average 1.670520231213873) internal successors, (1734), 1069 states have internal predecessors, (1734), 194 states have call successors, (194), 56 states have call predecessors, (194), 57 states have return successors, (201), 179 states have call predecessors, (201), 190 states have call successors, (201) [2022-07-19 16:41:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 2129 transitions. [2022-07-19 16:41:22,258 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 2129 transitions. Word has length 96 [2022-07-19 16:41:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:22,258 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 2129 transitions. [2022-07-19 16:41:22,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 16:41:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 2129 transitions. [2022-07-19 16:41:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-19 16:41:22,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:22,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:22,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 16:41:22,476 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 499012968, now seen corresponding path program 1 times [2022-07-19 16:41:22,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:22,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692997088] [2022-07-19 16:41:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:41:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:41:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:41:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:41:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:41:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:41:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 16:41:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 16:41:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 16:41:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 16:41:22,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692997088] [2022-07-19 16:41:22,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692997088] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479354807] [2022-07-19 16:41:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:22,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:22,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:22,754 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:22,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 16:41:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:22,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:41:22,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:41:23,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:23,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479354807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:23,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:23,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:41:23,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351536959] [2022-07-19 16:41:23,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:23,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:41:23,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:41:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:41:23,079 INFO L87 Difference]: Start difference. First operand 1290 states and 2129 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:41:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:23,529 INFO L93 Difference]: Finished difference Result 2442 states and 4093 transitions. [2022-07-19 16:41:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:41:23,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2022-07-19 16:41:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:23,536 INFO L225 Difference]: With dead ends: 2442 [2022-07-19 16:41:23,536 INFO L226 Difference]: Without dead ends: 1306 [2022-07-19 16:41:23,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:41:23,541 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 951 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:23,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 2577 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 16:41:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-07-19 16:41:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1306. [2022-07-19 16:41:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1052 states have (on average 1.6711026615969582) internal successors, (1758), 1083 states have internal predecessors, (1758), 194 states have call successors, (194), 58 states have call predecessors, (194), 59 states have return successors, (203), 179 states have call predecessors, (203), 190 states have call successors, (203) [2022-07-19 16:41:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 2155 transitions. [2022-07-19 16:41:23,590 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 2155 transitions. Word has length 151 [2022-07-19 16:41:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:23,590 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 2155 transitions. [2022-07-19 16:41:23,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:41:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 2155 transitions. [2022-07-19 16:41:23,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 16:41:23,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:23,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:23,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:23,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 16:41:23,807 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash 360994874, now seen corresponding path program 1 times [2022-07-19 16:41:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:23,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965216418] [2022-07-19 16:41:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:23,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:23,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:23,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:23,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:23,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:41:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:41:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 16:41:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 16:41:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 16:41:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 16:41:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 16:41:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 16:41:24,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:24,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965216418] [2022-07-19 16:41:24,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965216418] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:24,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026528131] [2022-07-19 16:41:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:24,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:24,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:24,028 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:24,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 16:41:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:24,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:41:24,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:41:24,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:24,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026528131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:24,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:24,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:41:24,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603581402] [2022-07-19 16:41:24,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:24,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:41:24,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:24,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:41:24,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:41:24,366 INFO L87 Difference]: Start difference. First operand 1306 states and 2155 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:41:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:24,812 INFO L93 Difference]: Finished difference Result 2474 states and 4139 transitions. [2022-07-19 16:41:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:41:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2022-07-19 16:41:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:24,818 INFO L225 Difference]: With dead ends: 2474 [2022-07-19 16:41:24,818 INFO L226 Difference]: Without dead ends: 1322 [2022-07-19 16:41:24,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:41:24,823 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 953 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:24,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2577 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 16:41:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-07-19 16:41:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1322. [2022-07-19 16:41:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1066 states have (on average 1.6716697936210132) internal successors, (1782), 1097 states have internal predecessors, (1782), 194 states have call successors, (194), 60 states have call predecessors, (194), 61 states have return successors, (205), 179 states have call predecessors, (205), 190 states have call successors, (205) [2022-07-19 16:41:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 2181 transitions. [2022-07-19 16:41:24,855 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 2181 transitions. Word has length 153 [2022-07-19 16:41:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:24,856 INFO L495 AbstractCegarLoop]: Abstraction has 1322 states and 2181 transitions. [2022-07-19 16:41:24,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:41:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 2181 transitions. [2022-07-19 16:41:24,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 16:41:24,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:24,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:24,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:25,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:25,076 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:25,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2002292282, now seen corresponding path program 1 times [2022-07-19 16:41:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:25,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569096766] [2022-07-19 16:41:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:41:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:41:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:41:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 16:41:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:41:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:41:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 16:41:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 16:41:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 16:41:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 16:41:25,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:25,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569096766] [2022-07-19 16:41:25,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569096766] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:25,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732436320] [2022-07-19 16:41:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:25,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:25,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:25,324 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:25,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-19 16:41:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:25,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 16:41:25,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 16:41:25,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:25,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732436320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:25,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:25,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:41:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671997336] [2022-07-19 16:41:25,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:25,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:41:25,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:25,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:41:25,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:41:25,652 INFO L87 Difference]: Start difference. First operand 1322 states and 2181 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:41:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:25,776 INFO L93 Difference]: Finished difference Result 3369 states and 5542 transitions. [2022-07-19 16:41:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:41:25,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-07-19 16:41:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:25,786 INFO L225 Difference]: With dead ends: 3369 [2022-07-19 16:41:25,786 INFO L226 Difference]: Without dead ends: 2201 [2022-07-19 16:41:25,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:41:25,792 INFO L413 NwaCegarLoop]: 1453 mSDtfsCounter, 1058 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 4944 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:25,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 4944 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:41:25,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2022-07-19 16:41:25,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2193. [2022-07-19 16:41:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1760 states have (on average 1.6448863636363635) internal successors, (2895), 1794 states have internal predecessors, (2895), 327 states have call successors, (327), 102 states have call predecessors, (327), 105 states have return successors, (367), 312 states have call predecessors, (367), 321 states have call successors, (367) [2022-07-19 16:41:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3589 transitions. [2022-07-19 16:41:25,848 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3589 transitions. Word has length 154 [2022-07-19 16:41:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:25,849 INFO L495 AbstractCegarLoop]: Abstraction has 2193 states and 3589 transitions. [2022-07-19 16:41:25,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:41:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3589 transitions. [2022-07-19 16:41:25,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 16:41:25,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:25,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:25,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:26,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:26,067 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -9135386, now seen corresponding path program 1 times [2022-07-19 16:41:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642744846] [2022-07-19 16:41:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:41:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:41:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:41:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 16:41:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:41:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:41:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-19 16:41:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 16:41:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 16:41:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 16:41:26,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:26,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642744846] [2022-07-19 16:41:26,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642744846] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:26,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419948270] [2022-07-19 16:41:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:26,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:26,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:26,310 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:26,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-19 16:41:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:26,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:41:26,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:41:26,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:26,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419948270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:26,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:26,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:41:26,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289075343] [2022-07-19 16:41:26,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:26,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:41:26,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:41:26,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:41:26,642 INFO L87 Difference]: Start difference. First operand 2193 states and 3589 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:41:27,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:27,053 INFO L93 Difference]: Finished difference Result 4264 states and 7090 transitions. [2022-07-19 16:41:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:41:27,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 155 [2022-07-19 16:41:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:27,063 INFO L225 Difference]: With dead ends: 4264 [2022-07-19 16:41:27,064 INFO L226 Difference]: Without dead ends: 2225 [2022-07-19 16:41:27,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:41:27,073 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 943 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:27,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 2577 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:41:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-07-19 16:41:27,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2022-07-19 16:41:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1788 states have (on average 1.645973154362416) internal successors, (2943), 1822 states have internal predecessors, (2943), 327 states have call successors, (327), 106 states have call predecessors, (327), 109 states have return successors, (371), 312 states have call predecessors, (371), 321 states have call successors, (371) [2022-07-19 16:41:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3641 transitions. [2022-07-19 16:41:27,131 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3641 transitions. Word has length 155 [2022-07-19 16:41:27,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:27,131 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3641 transitions. [2022-07-19 16:41:27,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:41:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3641 transitions. [2022-07-19 16:41:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-19 16:41:27,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:27,136 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:27,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:27,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:27,347 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:27,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash 514628356, now seen corresponding path program 1 times [2022-07-19 16:41:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:27,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316063501] [2022-07-19 16:41:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:27,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:41:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:41:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:41:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 16:41:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:41:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:41:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 16:41:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 16:41:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-19 16:41:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 16:41:27,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:27,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316063501] [2022-07-19 16:41:27,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316063501] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:27,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878105894] [2022-07-19 16:41:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:27,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:27,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:27,577 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:27,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-19 16:41:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:27,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:41:27,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:41:27,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:27,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878105894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:27,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:27,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 16:41:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479901931] [2022-07-19 16:41:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:27,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:41:27,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:41:27,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:41:27,905 INFO L87 Difference]: Start difference. First operand 2225 states and 3641 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:41:28,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:28,307 INFO L93 Difference]: Finished difference Result 4328 states and 7182 transitions. [2022-07-19 16:41:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:41:28,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2022-07-19 16:41:28,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:28,317 INFO L225 Difference]: With dead ends: 4328 [2022-07-19 16:41:28,318 INFO L226 Difference]: Without dead ends: 2257 [2022-07-19 16:41:28,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:41:28,325 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 939 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:28,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 2577 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:41:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-19 16:41:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2022-07-19 16:41:28,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 1816 states have (on average 1.6470264317180616) internal successors, (2991), 1850 states have internal predecessors, (2991), 327 states have call successors, (327), 110 states have call predecessors, (327), 113 states have return successors, (375), 312 states have call predecessors, (375), 321 states have call successors, (375) [2022-07-19 16:41:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3693 transitions. [2022-07-19 16:41:28,401 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3693 transitions. Word has length 157 [2022-07-19 16:41:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:28,402 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3693 transitions. [2022-07-19 16:41:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:41:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3693 transitions. [2022-07-19 16:41:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 16:41:28,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:28,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:28,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:28,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:28,619 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:28,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2054229210, now seen corresponding path program 1 times [2022-07-19 16:41:28,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:28,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117131468] [2022-07-19 16:41:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:28,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 16:41:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:41:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:41:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:41:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:41:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 16:41:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 16:41:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-19 16:41:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 16:41:28,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:28,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117131468] [2022-07-19 16:41:28,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117131468] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:28,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403247189] [2022-07-19 16:41:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:28,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:28,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:28,852 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:28,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-19 16:41:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1644 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:41:29,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 16:41:29,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:29,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403247189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:29,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:29,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-19 16:41:29,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972517113] [2022-07-19 16:41:29,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:29,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:41:29,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:29,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:41:29,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:41:29,079 INFO L87 Difference]: Start difference. First operand 2257 states and 3693 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:41:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:29,150 INFO L93 Difference]: Finished difference Result 4491 states and 7366 transitions. [2022-07-19 16:41:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:41:29,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2022-07-19 16:41:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:29,187 INFO L225 Difference]: With dead ends: 4491 [2022-07-19 16:41:29,188 INFO L226 Difference]: Without dead ends: 2222 [2022-07-19 16:41:29,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:41:29,196 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 13 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:29,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3027 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:41:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-07-19 16:41:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2222. [2022-07-19 16:41:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1784 states have (on average 1.6378923766816142) internal successors, (2922), 1816 states have internal predecessors, (2922), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2022-07-19 16:41:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3620 transitions. [2022-07-19 16:41:29,263 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3620 transitions. Word has length 159 [2022-07-19 16:41:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:29,263 INFO L495 AbstractCegarLoop]: Abstraction has 2222 states and 3620 transitions. [2022-07-19 16:41:29,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:41:29,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3620 transitions. [2022-07-19 16:41:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 16:41:29,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:29,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:29,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:29,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:29,483 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1837347117, now seen corresponding path program 1 times [2022-07-19 16:41:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:29,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278737929] [2022-07-19 16:41:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:41:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 16:41:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:41:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:41:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 16:41:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 16:41:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 16:41:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 16:41:29,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:29,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278737929] [2022-07-19 16:41:29,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278737929] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:29,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997624135] [2022-07-19 16:41:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:29,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:29,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:29,772 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:29,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-19 16:41:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 16:41:30,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:41:30,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:30,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997624135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:30,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:30,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2022-07-19 16:41:30,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024468436] [2022-07-19 16:41:30,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:30,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:41:30,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:41:30,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:41:30,064 INFO L87 Difference]: Start difference. First operand 2222 states and 3620 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:41:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:30,169 INFO L93 Difference]: Finished difference Result 4468 states and 7276 transitions. [2022-07-19 16:41:30,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:41:30,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-07-19 16:41:30,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:30,179 INFO L225 Difference]: With dead ends: 4468 [2022-07-19 16:41:30,179 INFO L226 Difference]: Without dead ends: 2263 [2022-07-19 16:41:30,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:41:30,186 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 138 mSDsluCounter, 4938 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5960 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:30,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5960 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:41:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2022-07-19 16:41:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2215. [2022-07-19 16:41:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1777 states have (on average 1.6353404614518852) internal successors, (2906), 1809 states have internal predecessors, (2906), 326 states have call successors, (326), 110 states have call predecessors, (326), 111 states have return successors, (372), 311 states have call predecessors, (372), 320 states have call successors, (372) [2022-07-19 16:41:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3604 transitions. [2022-07-19 16:41:30,252 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3604 transitions. Word has length 160 [2022-07-19 16:41:30,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:30,252 INFO L495 AbstractCegarLoop]: Abstraction has 2215 states and 3604 transitions. [2022-07-19 16:41:30,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 16:41:30,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3604 transitions. [2022-07-19 16:41:30,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 16:41:30,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:30,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:30,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:30,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:30,471 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:30,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1903901320, now seen corresponding path program 1 times [2022-07-19 16:41:30,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:30,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833609067] [2022-07-19 16:41:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:30,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:41:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:41:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:41:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:41:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 16:41:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 16:41:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 16:41:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:41:30,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:30,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833609067] [2022-07-19 16:41:30,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833609067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:30,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:41:30,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:41:30,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600959960] [2022-07-19 16:41:30,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:30,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:41:30,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:30,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:41:30,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:41:30,751 INFO L87 Difference]: Start difference. First operand 2215 states and 3604 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:41:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:35,556 INFO L93 Difference]: Finished difference Result 5158 states and 8453 transitions. [2022-07-19 16:41:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:41:35,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-07-19 16:41:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:35,568 INFO L225 Difference]: With dead ends: 5158 [2022-07-19 16:41:35,568 INFO L226 Difference]: Without dead ends: 3045 [2022-07-19 16:41:35,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:41:35,574 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 1175 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:35,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 2290 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-19 16:41:35,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-07-19 16:41:35,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2264. [2022-07-19 16:41:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 1817 states have (on average 1.6312603192074848) internal successors, (2964), 1849 states have internal predecessors, (2964), 332 states have call successors, (332), 110 states have call predecessors, (332), 114 states have return successors, (384), 318 states have call predecessors, (384), 326 states have call successors, (384) [2022-07-19 16:41:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3680 transitions. [2022-07-19 16:41:35,724 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3680 transitions. Word has length 161 [2022-07-19 16:41:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:35,724 INFO L495 AbstractCegarLoop]: Abstraction has 2264 states and 3680 transitions. [2022-07-19 16:41:35,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:41:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3680 transitions. [2022-07-19 16:41:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 16:41:35,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:35,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:35,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 16:41:35,731 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:35,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1853854388, now seen corresponding path program 1 times [2022-07-19 16:41:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:35,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393226103] [2022-07-19 16:41:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:35,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:41:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:41:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:41:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:41:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:41:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 16:41:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 16:41:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 16:41:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 16:41:35,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:35,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393226103] [2022-07-19 16:41:35,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393226103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:35,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:41:35,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:41:35,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332494520] [2022-07-19 16:41:35,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:35,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:41:35,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:35,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:41:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:41:35,953 INFO L87 Difference]: Start difference. First operand 2264 states and 3680 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:41:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:40,117 INFO L93 Difference]: Finished difference Result 5196 states and 8512 transitions. [2022-07-19 16:41:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:41:40,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-07-19 16:41:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:40,129 INFO L225 Difference]: With dead ends: 5196 [2022-07-19 16:41:40,129 INFO L226 Difference]: Without dead ends: 2940 [2022-07-19 16:41:40,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:41:40,165 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 2196 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:40,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2297 Valid, 2138 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:41:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2022-07-19 16:41:40,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2236. [2022-07-19 16:41:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 1792 states have (on average 1.6283482142857142) internal successors, (2918), 1822 states have internal predecessors, (2918), 331 states have call successors, (331), 110 states have call predecessors, (331), 112 states have return successors, (381), 317 states have call predecessors, (381), 325 states have call successors, (381) [2022-07-19 16:41:40,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3630 transitions. [2022-07-19 16:41:40,337 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3630 transitions. Word has length 161 [2022-07-19 16:41:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:40,338 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 3630 transitions. [2022-07-19 16:41:40,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 16:41:40,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3630 transitions. [2022-07-19 16:41:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 16:41:40,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:40,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:40,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 16:41:40,346 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash -243423905, now seen corresponding path program 1 times [2022-07-19 16:41:40,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:40,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759762387] [2022-07-19 16:41:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:41:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:41:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:41:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:41:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 16:41:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 16:41:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 16:41:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:41:40,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:40,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759762387] [2022-07-19 16:41:40,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759762387] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:40,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271929934] [2022-07-19 16:41:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:40,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:40,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:40,725 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:40,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-19 16:41:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:40,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:41:40,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 16:41:41,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:41,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271929934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:41,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:41,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-07-19 16:41:41,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097893657] [2022-07-19 16:41:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:41,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:41:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:41:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:41:41,130 INFO L87 Difference]: Start difference. First operand 2236 states and 3630 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-19 16:41:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:42,618 INFO L93 Difference]: Finished difference Result 4421 states and 7201 transitions. [2022-07-19 16:41:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:41:42,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 162 [2022-07-19 16:41:42,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:42,628 INFO L225 Difference]: With dead ends: 4421 [2022-07-19 16:41:42,628 INFO L226 Difference]: Without dead ends: 2276 [2022-07-19 16:41:42,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:41:42,636 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 2330 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:42,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2452 Valid, 1952 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 16:41:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2022-07-19 16:41:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2136. [2022-07-19 16:41:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 1666 states have (on average 1.60984393757503) internal successors, (2682), 1716 states have internal predecessors, (2682), 365 states have call successors, (365), 100 states have call predecessors, (365), 104 states have return successors, (413), 344 states have call predecessors, (413), 359 states have call successors, (413) [2022-07-19 16:41:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3460 transitions. [2022-07-19 16:41:42,795 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3460 transitions. Word has length 162 [2022-07-19 16:41:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:42,796 INFO L495 AbstractCegarLoop]: Abstraction has 2136 states and 3460 transitions. [2022-07-19 16:41:42,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-19 16:41:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3460 transitions. [2022-07-19 16:41:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 16:41:42,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:42,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:42,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:43,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-19 16:41:43,018 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash 488543521, now seen corresponding path program 1 times [2022-07-19 16:41:43,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:43,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059421996] [2022-07-19 16:41:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:43,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:41:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:41:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:41:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:41:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 16:41:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 16:41:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 16:41:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:41:43,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:43,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059421996] [2022-07-19 16:41:43,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059421996] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:41:43,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615853506] [2022-07-19 16:41:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:43,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:41:43,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:41:43,352 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:41:43,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-19 16:41:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:43,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 16:41:43,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:41:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 16:41:43,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:41:43,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615853506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:43,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:41:43,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-07-19 16:41:43,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107690588] [2022-07-19 16:41:43,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:43,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:41:43,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:41:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:41:43,727 INFO L87 Difference]: Start difference. First operand 2136 states and 3460 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 16:41:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:41:47,700 INFO L93 Difference]: Finished difference Result 8893 states and 14688 transitions. [2022-07-19 16:41:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 16:41:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2022-07-19 16:41:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:41:47,728 INFO L225 Difference]: With dead ends: 8893 [2022-07-19 16:41:47,729 INFO L226 Difference]: Without dead ends: 6847 [2022-07-19 16:41:47,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2022-07-19 16:41:47,739 INFO L413 NwaCegarLoop]: 1853 mSDtfsCounter, 3313 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 6500 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 7416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 6500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:41:47,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3428 Valid, 3564 Invalid, 7416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 6500 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:41:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2022-07-19 16:41:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 6427. [2022-07-19 16:41:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6427 states, 4950 states have (on average 1.5977777777777777) internal successors, (7909), 5105 states have internal predecessors, (7909), 1149 states have call successors, (1149), 276 states have call predecessors, (1149), 327 states have return successors, (1500), 1119 states have call predecessors, (1500), 1139 states have call successors, (1500) [2022-07-19 16:41:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6427 states to 6427 states and 10558 transitions. [2022-07-19 16:41:48,213 INFO L78 Accepts]: Start accepts. Automaton has 6427 states and 10558 transitions. Word has length 162 [2022-07-19 16:41:48,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:41:48,214 INFO L495 AbstractCegarLoop]: Abstraction has 6427 states and 10558 transitions. [2022-07-19 16:41:48,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 16:41:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 6427 states and 10558 transitions. [2022-07-19 16:41:48,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 16:41:48,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:41:48,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:41:48,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-19 16:41:48,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-19 16:41:48,431 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:41:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:41:48,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1557155161, now seen corresponding path program 1 times [2022-07-19 16:41:48,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:41:48,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934163815] [2022-07-19 16:41:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:41:48,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:41:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:41:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:41:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:41:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:41:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:41:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:41:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:41:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:41:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:41:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:41:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:41:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:41:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 16:41:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-19 16:41:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:41:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 16:41:48,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:41:48,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934163815] [2022-07-19 16:41:48,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934163815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:41:48,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:41:48,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:41:48,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718006034] [2022-07-19 16:41:48,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:41:48,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:41:48,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:41:48,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:41:48,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:41:48,748 INFO L87 Difference]: Start difference. First operand 6427 states and 10558 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 16:42:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:42:05,055 INFO L93 Difference]: Finished difference Result 29834 states and 50764 transitions. [2022-07-19 16:42:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 16:42:05,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 167 [2022-07-19 16:42:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:42:05,180 INFO L225 Difference]: With dead ends: 29834 [2022-07-19 16:42:05,180 INFO L226 Difference]: Without dead ends: 23492 [2022-07-19 16:42:05,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2022-07-19 16:42:05,218 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 8858 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 6619 mSolverCounterSat, 4749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8931 SdHoareTripleChecker+Valid, 3422 SdHoareTripleChecker+Invalid, 11368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4749 IncrementalHoareTripleChecker+Valid, 6619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:42:05,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8931 Valid, 3422 Invalid, 11368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4749 Valid, 6619 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-07-19 16:42:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23492 states. [2022-07-19 16:42:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23492 to 6530. [2022-07-19 16:42:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6530 states, 5032 states have (on average 1.5949920508744038) internal successors, (8026), 5187 states have internal predecessors, (8026), 1164 states have call successors, (1164), 279 states have call predecessors, (1164), 333 states have return successors, (1500), 1135 states have call predecessors, (1500), 1154 states have call successors, (1500) [2022-07-19 16:42:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6530 states to 6530 states and 10690 transitions. [2022-07-19 16:42:06,197 INFO L78 Accepts]: Start accepts. Automaton has 6530 states and 10690 transitions. Word has length 167 [2022-07-19 16:42:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:42:06,198 INFO L495 AbstractCegarLoop]: Abstraction has 6530 states and 10690 transitions. [2022-07-19 16:42:06,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 16:42:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states and 10690 transitions. [2022-07-19 16:42:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 16:42:06,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:42:06,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:42:06,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 16:42:06,202 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:42:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:42:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash 493828837, now seen corresponding path program 1 times [2022-07-19 16:42:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:42:06,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527326652] [2022-07-19 16:42:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:42:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:42:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:42:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:42:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:42:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:42:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:42:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:42:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:42:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:42:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:42:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 16:42:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-19 16:42:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:42:06,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:42:06,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527326652] [2022-07-19 16:42:06,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527326652] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:42:06,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460732129] [2022-07-19 16:42:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:06,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:06,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:42:06,534 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:42:06,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-19 16:42:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:06,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 16:42:06,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:42:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 16:42:06,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:42:06,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460732129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:42:06,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:42:06,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-07-19 16:42:06,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204167315] [2022-07-19 16:42:06,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:42:06,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:42:06,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:42:06,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:42:06,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:42:06,828 INFO L87 Difference]: Start difference. First operand 6530 states and 10690 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:42:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:42:07,933 INFO L93 Difference]: Finished difference Result 8842 states and 14671 transitions. [2022-07-19 16:42:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:42:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-07-19 16:42:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:42:07,966 INFO L225 Difference]: With dead ends: 8842 [2022-07-19 16:42:07,966 INFO L226 Difference]: Without dead ends: 8839 [2022-07-19 16:42:07,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-19 16:42:07,973 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 969 mSDsluCounter, 5605 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 7509 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:42:07,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 7509 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:42:07,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2022-07-19 16:42:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 8774. [2022-07-19 16:42:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8774 states, 6776 states have (on average 1.5950413223140496) internal successors, (10808), 6972 states have internal predecessors, (10808), 1556 states have call successors, (1556), 371 states have call predecessors, (1556), 441 states have return successors, (2113), 1526 states have call predecessors, (2113), 1542 states have call successors, (2113) [2022-07-19 16:42:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8774 states to 8774 states and 14477 transitions. [2022-07-19 16:42:08,951 INFO L78 Accepts]: Start accepts. Automaton has 8774 states and 14477 transitions. Word has length 167 [2022-07-19 16:42:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:42:08,952 INFO L495 AbstractCegarLoop]: Abstraction has 8774 states and 14477 transitions. [2022-07-19 16:42:08,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:42:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8774 states and 14477 transitions. [2022-07-19 16:42:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 16:42:08,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:42:08,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:42:08,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-19 16:42:09,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:09,175 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:42:09,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:42:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1893806633, now seen corresponding path program 1 times [2022-07-19 16:42:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:42:09,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047705609] [2022-07-19 16:42:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:09,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:42:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:42:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:42:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:42:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:42:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:42:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:42:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:42:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:42:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:42:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:42:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 16:42:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-19 16:42:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:42:09,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:42:09,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047705609] [2022-07-19 16:42:09,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047705609] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:42:09,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112325451] [2022-07-19 16:42:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:09,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:09,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:42:09,556 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:42:09,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-19 16:42:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:09,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:42:09,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:42:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 16:42:09,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:42:09,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112325451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:42:09,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:42:09,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-07-19 16:42:09,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785874819] [2022-07-19 16:42:09,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:42:09,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:42:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:42:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:42:09,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:42:09,841 INFO L87 Difference]: Start difference. First operand 8774 states and 14477 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:42:10,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:42:10,754 INFO L93 Difference]: Finished difference Result 17497 states and 29444 transitions. [2022-07-19 16:42:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:42:10,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-07-19 16:42:10,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:42:10,784 INFO L225 Difference]: With dead ends: 17497 [2022-07-19 16:42:10,785 INFO L226 Difference]: Without dead ends: 8870 [2022-07-19 16:42:10,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:42:10,814 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 86 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:42:10,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 2959 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:42:10,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8870 states. [2022-07-19 16:42:11,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8870 to 8870. [2022-07-19 16:42:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8870 states, 6856 states have (on average 1.590431738623104) internal successors, (10904), 7052 states have internal predecessors, (10904), 1556 states have call successors, (1556), 387 states have call predecessors, (1556), 457 states have return successors, (2113), 1526 states have call predecessors, (2113), 1542 states have call successors, (2113) [2022-07-19 16:42:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8870 states to 8870 states and 14573 transitions. [2022-07-19 16:42:11,740 INFO L78 Accepts]: Start accepts. Automaton has 8870 states and 14573 transitions. Word has length 167 [2022-07-19 16:42:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:42:11,740 INFO L495 AbstractCegarLoop]: Abstraction has 8870 states and 14573 transitions. [2022-07-19 16:42:11,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:42:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 8870 states and 14573 transitions. [2022-07-19 16:42:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-19 16:42:11,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:42:11,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:42:11,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-19 16:42:11,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:11,963 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:42:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:42:11,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1783962158, now seen corresponding path program 1 times [2022-07-19 16:42:11,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:42:11,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670038816] [2022-07-19 16:42:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:11,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:42:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:42:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:42:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:42:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:42:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:42:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:42:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:42:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:42:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:42:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:42:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 16:42:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-19 16:42:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:42:12,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:42:12,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670038816] [2022-07-19 16:42:12,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670038816] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:42:12,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149541802] [2022-07-19 16:42:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:12,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:12,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:42:12,293 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:42:12,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-19 16:42:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:12,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 16:42:12,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:42:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 16:42:12,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:42:12,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149541802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:42:12,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:42:12,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-07-19 16:42:12,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325156903] [2022-07-19 16:42:12,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:42:12,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:42:12,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:42:12,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:42:12,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:42:12,690 INFO L87 Difference]: Start difference. First operand 8870 states and 14573 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 16:42:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:42:17,764 INFO L93 Difference]: Finished difference Result 28581 states and 48421 transitions. [2022-07-19 16:42:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:42:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 169 [2022-07-19 16:42:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:42:17,844 INFO L225 Difference]: With dead ends: 28581 [2022-07-19 16:42:17,844 INFO L226 Difference]: Without dead ends: 19856 [2022-07-19 16:42:17,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-07-19 16:42:17,895 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 3307 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 4842 mSolverCounterSat, 922 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3423 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 5764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 4842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:42:17,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3423 Valid, 2822 Invalid, 5764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [922 Valid, 4842 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:42:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19856 states. [2022-07-19 16:42:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19856 to 19368. [2022-07-19 16:42:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19368 states, 14978 states have (on average 1.5857924956603018) internal successors, (23752), 15397 states have internal predecessors, (23752), 3353 states have call successors, (3353), 911 states have call predecessors, (3353), 1036 states have return successors, (5017), 3263 states have call predecessors, (5017), 3325 states have call successors, (5017) [2022-07-19 16:42:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19368 states to 19368 states and 32122 transitions. [2022-07-19 16:42:19,954 INFO L78 Accepts]: Start accepts. Automaton has 19368 states and 32122 transitions. Word has length 169 [2022-07-19 16:42:19,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:42:19,955 INFO L495 AbstractCegarLoop]: Abstraction has 19368 states and 32122 transitions. [2022-07-19 16:42:19,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 16:42:19,955 INFO L276 IsEmpty]: Start isEmpty. Operand 19368 states and 32122 transitions. [2022-07-19 16:42:19,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-19 16:42:19,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:42:19,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:42:19,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-07-19 16:42:20,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:20,160 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:42:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:42:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2032669217, now seen corresponding path program 1 times [2022-07-19 16:42:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:42:20,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392462789] [2022-07-19 16:42:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:20,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:42:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:42:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:42:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:42:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:42:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:42:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:42:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:42:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:42:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:42:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 16:42:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-19 16:42:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 16:42:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:42:20,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:42:20,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392462789] [2022-07-19 16:42:20,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392462789] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:42:20,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316603228] [2022-07-19 16:42:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:20,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:20,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:42:20,578 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:42:20,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-19 16:42:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:20,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 16:42:20,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:42:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 16:42:20,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:42:20,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316603228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:42:20,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:42:20,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2022-07-19 16:42:20,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013906849] [2022-07-19 16:42:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:42:20,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:42:20,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:42:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:42:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:42:20,972 INFO L87 Difference]: Start difference. First operand 19368 states and 32122 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 16:42:24,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:42:24,159 INFO L93 Difference]: Finished difference Result 44299 states and 74680 transitions. [2022-07-19 16:42:24,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:42:24,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 170 [2022-07-19 16:42:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:42:24,279 INFO L225 Difference]: With dead ends: 44299 [2022-07-19 16:42:24,279 INFO L226 Difference]: Without dead ends: 25063 [2022-07-19 16:42:24,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-07-19 16:42:24,375 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1685 mSDsluCounter, 5026 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 6615 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:42:24,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 6615 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 16:42:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25063 states. [2022-07-19 16:42:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25063 to 24922. [2022-07-19 16:42:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24922 states, 19717 states have (on average 1.5798042298524115) internal successors, (31149), 20186 states have internal predecessors, (31149), 3717 states have call successors, (3717), 1285 states have call predecessors, (3717), 1487 states have return successors, (7222), 3654 states have call predecessors, (7222), 3669 states have call successors, (7222) [2022-07-19 16:42:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24922 states to 24922 states and 42088 transitions. [2022-07-19 16:42:27,129 INFO L78 Accepts]: Start accepts. Automaton has 24922 states and 42088 transitions. Word has length 170 [2022-07-19 16:42:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:42:27,129 INFO L495 AbstractCegarLoop]: Abstraction has 24922 states and 42088 transitions. [2022-07-19 16:42:27,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 16:42:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand 24922 states and 42088 transitions. [2022-07-19 16:42:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-19 16:42:27,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:42:27,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:42:27,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-07-19 16:42:27,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-19 16:42:27,334 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:42:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:42:27,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1576511433, now seen corresponding path program 1 times [2022-07-19 16:42:27,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:42:27,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973320089] [2022-07-19 16:42:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:27,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:42:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:42:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:42:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:42:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:42:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:42:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:42:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:42:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:42:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:42:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:42:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 16:42:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-19 16:42:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 16:42:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:42:27,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973320089] [2022-07-19 16:42:27,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973320089] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:42:27,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157687294] [2022-07-19 16:42:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:27,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:42:27,635 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:42:27,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-19 16:42:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:27,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 16:42:27,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:42:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:42:28,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:42:28,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157687294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:42:28,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:42:28,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-07-19 16:42:28,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364013172] [2022-07-19 16:42:28,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:42:28,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:42:28,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:42:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:42:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:42:28,053 INFO L87 Difference]: Start difference. First operand 24922 states and 42088 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 16:42:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:42:34,261 INFO L93 Difference]: Finished difference Result 47551 states and 80180 transitions. [2022-07-19 16:42:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:42:34,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 173 [2022-07-19 16:42:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:42:34,362 INFO L225 Difference]: With dead ends: 47551 [2022-07-19 16:42:34,363 INFO L226 Difference]: Without dead ends: 25531 [2022-07-19 16:42:34,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-07-19 16:42:34,462 INFO L413 NwaCegarLoop]: 1647 mSDtfsCounter, 3158 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 4918 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 5814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 4918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:42:34,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3274 Valid, 2815 Invalid, 5814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 4918 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:42:34,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25531 states. [2022-07-19 16:42:37,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25531 to 24910. [2022-07-19 16:42:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24910 states, 19705 states have (on average 1.5789393554935296) internal successors, (31113), 20174 states have internal predecessors, (31113), 3717 states have call successors, (3717), 1285 states have call predecessors, (3717), 1487 states have return successors, (7222), 3654 states have call predecessors, (7222), 3669 states have call successors, (7222) [2022-07-19 16:42:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24910 states to 24910 states and 42052 transitions. [2022-07-19 16:42:37,253 INFO L78 Accepts]: Start accepts. Automaton has 24910 states and 42052 transitions. Word has length 173 [2022-07-19 16:42:37,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:42:37,253 INFO L495 AbstractCegarLoop]: Abstraction has 24910 states and 42052 transitions. [2022-07-19 16:42:37,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 16:42:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 24910 states and 42052 transitions. [2022-07-19 16:42:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-19 16:42:37,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:42:37,258 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:42:37,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-07-19 16:42:37,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:37,458 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:42:37,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:42:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1542712051, now seen corresponding path program 1 times [2022-07-19 16:42:37,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:42:37,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378276646] [2022-07-19 16:42:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:42:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:42:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:42:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:42:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:42:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:42:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:42:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:42:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:42:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:42:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:42:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 16:42:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-19 16:42:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 16:42:37,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:42:37,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378276646] [2022-07-19 16:42:37,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378276646] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:42:37,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916717006] [2022-07-19 16:42:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:37,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:37,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:42:37,790 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:42:37,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-19 16:42:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:37,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:42:37,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:42:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 16:42:38,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:42:38,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916717006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:42:38,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:42:38,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-07-19 16:42:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226674971] [2022-07-19 16:42:38,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:42:38,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 16:42:38,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:42:38,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 16:42:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:42:38,030 INFO L87 Difference]: Start difference. First operand 24910 states and 42052 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:42:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:42:41,174 INFO L93 Difference]: Finished difference Result 49854 states and 87075 transitions. [2022-07-19 16:42:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:42:41,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-07-19 16:42:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:42:41,275 INFO L225 Difference]: With dead ends: 49854 [2022-07-19 16:42:41,275 INFO L226 Difference]: Without dead ends: 24848 [2022-07-19 16:42:41,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:42:41,408 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 93 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:42:41,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 2953 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:42:41,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24848 states. [2022-07-19 16:42:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24848 to 24848. [2022-07-19 16:42:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24848 states, 19643 states have (on average 1.5712976632897215) internal successors, (30865), 20112 states have internal predecessors, (30865), 3717 states have call successors, (3717), 1285 states have call predecessors, (3717), 1487 states have return successors, (7222), 3654 states have call predecessors, (7222), 3669 states have call successors, (7222) [2022-07-19 16:42:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24848 states to 24848 states and 41804 transitions. [2022-07-19 16:42:44,105 INFO L78 Accepts]: Start accepts. Automaton has 24848 states and 41804 transitions. Word has length 175 [2022-07-19 16:42:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:42:44,105 INFO L495 AbstractCegarLoop]: Abstraction has 24848 states and 41804 transitions. [2022-07-19 16:42:44,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:42:44,106 INFO L276 IsEmpty]: Start isEmpty. Operand 24848 states and 41804 transitions. [2022-07-19 16:42:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 16:42:44,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:42:44,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:42:44,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-07-19 16:42:44,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:44,310 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:42:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:42:44,310 INFO L85 PathProgramCache]: Analyzing trace with hash 100111379, now seen corresponding path program 1 times [2022-07-19 16:42:44,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:42:44,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342104120] [2022-07-19 16:42:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:44,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:42:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:42:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:42:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:42:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:42:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:42:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:42:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:42:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:42:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:42:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:42:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 16:42:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-19 16:42:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:42:44,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:42:44,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342104120] [2022-07-19 16:42:44,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342104120] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:42:44,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836531607] [2022-07-19 16:42:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:44,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:44,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:42:44,594 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:42:44,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-19 16:42:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:44,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 16:42:44,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:42:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:42:44,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:42:44,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836531607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:42:44,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:42:44,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-07-19 16:42:44,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999500836] [2022-07-19 16:42:44,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:42:44,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:42:44,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:42:44,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:42:44,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:42:44,955 INFO L87 Difference]: Start difference. First operand 24848 states and 41804 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 16:42:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:42:53,708 INFO L93 Difference]: Finished difference Result 73042 states and 132207 transitions. [2022-07-19 16:42:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:42:53,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 176 [2022-07-19 16:42:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:42:53,904 INFO L225 Difference]: With dead ends: 73042 [2022-07-19 16:42:53,904 INFO L226 Difference]: Without dead ends: 48326 [2022-07-19 16:42:54,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:42:54,062 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 3800 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 3665 mSolverCounterSat, 1080 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3910 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 4745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1080 IncrementalHoareTripleChecker+Valid, 3665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:42:54,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3910 Valid, 1801 Invalid, 4745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1080 Valid, 3665 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 16:42:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48326 states. [2022-07-19 16:42:58,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48326 to 42862. [2022-07-19 16:42:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42862 states, 33757 states have (on average 1.5474123885416358) internal successors, (52236), 34637 states have internal predecessors, (52236), 6458 states have call successors, (6458), 2237 states have call predecessors, (6458), 2646 states have return successors, (12397), 6359 states have call predecessors, (12397), 6405 states have call successors, (12397) [2022-07-19 16:42:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42862 states to 42862 states and 71091 transitions. [2022-07-19 16:42:59,335 INFO L78 Accepts]: Start accepts. Automaton has 42862 states and 71091 transitions. Word has length 176 [2022-07-19 16:42:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:42:59,335 INFO L495 AbstractCegarLoop]: Abstraction has 42862 states and 71091 transitions. [2022-07-19 16:42:59,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 16:42:59,336 INFO L276 IsEmpty]: Start isEmpty. Operand 42862 states and 71091 transitions. [2022-07-19 16:42:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-19 16:42:59,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:42:59,338 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:42:59,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-07-19 16:42:59,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-19 16:42:59,545 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:42:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:42:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash 298445386, now seen corresponding path program 1 times [2022-07-19 16:42:59,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:42:59,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24116131] [2022-07-19 16:42:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:59,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:42:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:42:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:42:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:42:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:42:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:42:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:42:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:42:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:42:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:42:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:42:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:42:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:42:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 16:42:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-19 16:42:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:42:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:42:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:42:59,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24116131] [2022-07-19 16:42:59,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24116131] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:42:59,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053607780] [2022-07-19 16:42:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:42:59,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:42:59,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:42:59,850 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:42:59,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-19 16:43:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:00,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 16:43:00,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:43:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:43:00,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:43:00,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053607780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:43:00,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:43:00,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2022-07-19 16:43:00,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468711226] [2022-07-19 16:43:00,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:43:00,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:43:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:43:00,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:43:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:43:00,209 INFO L87 Difference]: Start difference. First operand 42862 states and 71091 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 16:43:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:43:08,694 INFO L93 Difference]: Finished difference Result 83860 states and 139631 transitions. [2022-07-19 16:43:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:43:08,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 177 [2022-07-19 16:43:08,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:43:08,878 INFO L225 Difference]: With dead ends: 83860 [2022-07-19 16:43:08,878 INFO L226 Difference]: Without dead ends: 43914 [2022-07-19 16:43:09,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-07-19 16:43:09,070 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 3130 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 4885 mSolverCounterSat, 905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3247 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 5790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 4885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:43:09,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3247 Valid, 2795 Invalid, 5790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [905 Valid, 4885 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:43:09,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43914 states. [2022-07-19 16:43:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43914 to 42826. [2022-07-19 16:43:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42826 states, 33721 states have (on average 1.5458616292518015) internal successors, (52128), 34601 states have internal predecessors, (52128), 6458 states have call successors, (6458), 2237 states have call predecessors, (6458), 2646 states have return successors, (12397), 6359 states have call predecessors, (12397), 6405 states have call successors, (12397) [2022-07-19 16:43:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42826 states to 42826 states and 70983 transitions. [2022-07-19 16:43:14,082 INFO L78 Accepts]: Start accepts. Automaton has 42826 states and 70983 transitions. Word has length 177 [2022-07-19 16:43:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:43:14,083 INFO L495 AbstractCegarLoop]: Abstraction has 42826 states and 70983 transitions. [2022-07-19 16:43:14,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-19 16:43:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 42826 states and 70983 transitions. [2022-07-19 16:43:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 16:43:14,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:43:14,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:43:14,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-07-19 16:43:14,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-19 16:43:14,304 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:43:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:43:14,304 INFO L85 PathProgramCache]: Analyzing trace with hash 225879796, now seen corresponding path program 1 times [2022-07-19 16:43:14,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:43:14,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915049842] [2022-07-19 16:43:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:43:14,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:43:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:43:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:43:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:43:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:43:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:43:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:43:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:43:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:43:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:43:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:43:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:43:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:43:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 16:43:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 16:43:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:43:14,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:43:14,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915049842] [2022-07-19 16:43:14,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915049842] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:43:14,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645984062] [2022-07-19 16:43:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:43:14,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:43:14,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:43:14,588 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:43:14,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-07-19 16:43:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:14,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 16:43:14,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:43:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:43:14,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:43:14,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645984062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:43:14,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:43:14,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-07-19 16:43:14,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465502306] [2022-07-19 16:43:14,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:43:14,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:43:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:43:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:43:14,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:43:14,837 INFO L87 Difference]: Start difference. First operand 42826 states and 70983 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:43:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:43:20,371 INFO L93 Difference]: Finished difference Result 87037 states and 148790 transitions. [2022-07-19 16:43:20,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:43:20,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 179 [2022-07-19 16:43:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:43:20,559 INFO L225 Difference]: With dead ends: 87037 [2022-07-19 16:43:20,559 INFO L226 Difference]: Without dead ends: 44363 [2022-07-19 16:43:20,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-19 16:43:20,789 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 3 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:43:20,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4103 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:43:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44363 states. [2022-07-19 16:43:25,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44363 to 43380. [2022-07-19 16:43:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43380 states, 34211 states have (on average 1.538043319400193) internal successors, (52618), 34942 states have internal predecessors, (52618), 6458 states have call successors, (6458), 2237 states have call predecessors, (6458), 2710 states have return successors, (12610), 6572 states have call predecessors, (12610), 6405 states have call successors, (12610) [2022-07-19 16:43:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43380 states to 43380 states and 71686 transitions. [2022-07-19 16:43:26,019 INFO L78 Accepts]: Start accepts. Automaton has 43380 states and 71686 transitions. Word has length 179 [2022-07-19 16:43:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:43:26,020 INFO L495 AbstractCegarLoop]: Abstraction has 43380 states and 71686 transitions. [2022-07-19 16:43:26,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 16:43:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 43380 states and 71686 transitions. [2022-07-19 16:43:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-19 16:43:26,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:43:26,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:43:26,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-07-19 16:43:26,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-19 16:43:26,223 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:43:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:43:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1561225017, now seen corresponding path program 1 times [2022-07-19 16:43:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:43:26,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589981289] [2022-07-19 16:43:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:43:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:43:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:43:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:43:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:43:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:43:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:43:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:43:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:43:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:43:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:43:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 16:43:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:43:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:43:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 16:43:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 16:43:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-19 16:43:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 16:43:26,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:43:26,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589981289] [2022-07-19 16:43:26,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589981289] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:43:26,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388885541] [2022-07-19 16:43:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:43:26,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:43:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:43:26,506 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:43:26,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-07-19 16:43:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:43:26,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:43:26,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:43:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 16:43:26,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:43:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-19 16:43:27,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388885541] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 16:43:27,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 16:43:27,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 9] total 26 [2022-07-19 16:43:27,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192357159] [2022-07-19 16:43:27,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 16:43:27,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 16:43:27,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:43:27,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 16:43:27,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-07-19 16:43:27,241 INFO L87 Difference]: Start difference. First operand 43380 states and 71686 transitions. Second operand has 26 states, 26 states have (on average 11.115384615384615) internal successors, (289), 21 states have internal predecessors, (289), 10 states have call successors, (51), 10 states have call predecessors, (51), 12 states have return successors, (48), 15 states have call predecessors, (48), 10 states have call successors, (48)