/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:12:16,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:12:16,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:12:16,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:12:16,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:12:16,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:12:16,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:12:16,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:12:16,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:12:16,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:12:16,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:12:16,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:12:16,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:12:16,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:12:16,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:12:16,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:12:16,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:12:16,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:12:16,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:12:16,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:12:16,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:12:16,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:12:16,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:12:16,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:12:16,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:12:16,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:12:16,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:12:16,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:12:16,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:12:16,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:12:16,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:12:16,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:12:16,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:12:16,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:12:16,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:12:16,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:12:16,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:12:16,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:12:16,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:12:16,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:12:16,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:12:16,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:12:16,237 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:12:16,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:12:16,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:12:16,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:12:16,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:12:16,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:12:16,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:12:16,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:12:16,239 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:12:16,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:12:16,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:12:16,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:12:16,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:12:16,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:12:16,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:12:16,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:12:16,241 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:12:16,241 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:12:16,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:12:16,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:12:16,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:12:16,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:12:16,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:12:16,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:12:16,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:12:16,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:12:16,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:12:16,242 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:12:16,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:12:16,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:12:16,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:12:16,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:12:16,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:12:16,243 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:12:16,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:12:16,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:12:16,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:12:16,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:12:16,473 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:12:16,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2022-01-10 06:12:16,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4332d9ce4/c6c1677d56c149df87c5a3ebeb37d5c2/FLAG8230e1649 [2022-01-10 06:12:17,022 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:12:17,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2022-01-10 06:12:17,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4332d9ce4/c6c1677d56c149df87c5a3ebeb37d5c2/FLAG8230e1649 [2022-01-10 06:12:17,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4332d9ce4/c6c1677d56c149df87c5a3ebeb37d5c2 [2022-01-10 06:12:17,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:12:17,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:12:17,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:12:17,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:12:17,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:12:17,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:12:17" (1/1) ... [2022-01-10 06:12:17,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c382ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:17, skipping insertion in model container [2022-01-10 06:12:17,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:12:17" (1/1) ... [2022-01-10 06:12:17,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:12:17,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:12:17,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c[37848,37861] [2022-01-10 06:12:17,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:12:17,956 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:12:17,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:12:18,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c[37848,37861] [2022-01-10 06:12:18,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:12:18,105 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:12:18,161 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c[37848,37861] [2022-01-10 06:12:18,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:12:18,230 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:12:18,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18 WrapperNode [2022-01-10 06:12:18,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:12:18,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:12:18,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:12:18,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:12:18,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,328 INFO L137 Inliner]: procedures = 110, calls = 381, calls flagged for inlining = 34, calls inlined = 30, statements flattened = 939 [2022-01-10 06:12:18,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:12:18,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:12:18,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:12:18,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:12:18,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:12:18,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:12:18,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:12:18,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:12:18,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (1/1) ... [2022-01-10 06:12:18,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:12:18,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:12:18,554 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) [2022-01-10 06:12:18,593 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 [2022-01-10 06:12:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-01-10 06:12:18,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-01-10 06:12:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-01-10 06:12:18,610 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-01-10 06:12:18,610 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:12:18,610 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:12:18,611 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:12:18,611 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:12:18,611 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2022-01-10 06:12:18,611 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2022-01-10 06:12:18,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2022-01-10 06:12:18,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2022-01-10 06:12:18,611 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:12:18,611 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:12:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2022-01-10 06:12:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2022-01-10 06:12:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:12:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:12:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:12:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:12:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-01-10 06:12:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-01-10 06:12:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2022-01-10 06:12:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2022-01-10 06:12:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-01-10 06:12:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-01-10 06:12:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:12:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:12:18,612 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:12:18,612 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:12:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-01-10 06:12:18,613 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-01-10 06:12:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:12:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:12:18,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:12:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-01-10 06:12:18,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-01-10 06:12:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-01-10 06:12:18,613 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-01-10 06:12:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:12:18,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:12:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2022-01-10 06:12:18,613 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2022-01-10 06:12:18,613 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:12:18,613 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:12:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:12:18,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:12:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:12:18,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:12:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2022-01-10 06:12:18,614 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2022-01-10 06:12:18,614 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2022-01-10 06:12:18,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2022-01-10 06:12:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:12:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:12:18,615 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:12:18,615 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2022-01-10 06:12:18,615 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2022-01-10 06:12:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:12:18,616 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:12:18,616 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:12:18,616 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:12:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:12:18,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:12:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:12:18,617 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:12:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-01-10 06:12:18,617 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-01-10 06:12:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:12:18,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:12:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2022-01-10 06:12:18,618 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2022-01-10 06:12:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:12:18,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:12:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:12:18,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:12:18,816 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:12:18,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:12:19,677 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:12:19,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:12:19,688 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-10 06:12:19,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:12:19 BoogieIcfgContainer [2022-01-10 06:12:19,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:12:19,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:12:19,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:12:19,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:12:19,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:12:17" (1/3) ... [2022-01-10 06:12:19,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5942eb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:12:19, skipping insertion in model container [2022-01-10 06:12:19,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:18" (2/3) ... [2022-01-10 06:12:19,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5942eb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:12:19, skipping insertion in model container [2022-01-10 06:12:19,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:12:19" (3/3) ... [2022-01-10 06:12:19,697 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_productSimulator.cil.c [2022-01-10 06:12:19,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:12:19,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:12:19,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:12:19,741 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:12:19,741 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:12:19,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 708 states, 540 states have (on average 1.6444444444444444) internal successors, (888), 564 states have internal predecessors, (888), 130 states have call successors, (130), 36 states have call predecessors, (130), 36 states have return successors, (130), 125 states have call predecessors, (130), 130 states have call successors, (130) [2022-01-10 06:12:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 06:12:19,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:19,781 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:19,781 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:19,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1894036510, now seen corresponding path program 1 times [2022-01-10 06:12:19,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:19,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63632956] [2022-01-10 06:12:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:19,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:19,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:19,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:19,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:12:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:20,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:12:20,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-01-10 06:12:20,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:20,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63632956] [2022-01-10 06:12:20,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63632956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:20,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:20,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:12:20,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918120187] [2022-01-10 06:12:20,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:20,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:12:20,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:20,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:12:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:20,404 INFO L87 Difference]: Start difference. First operand has 708 states, 540 states have (on average 1.6444444444444444) internal successors, (888), 564 states have internal predecessors, (888), 130 states have call successors, (130), 36 states have call predecessors, (130), 36 states have return successors, (130), 125 states have call predecessors, (130), 130 states have call successors, (130) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:20,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:20,607 INFO L93 Difference]: Finished difference Result 1400 states and 2282 transitions. [2022-01-10 06:12:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:12:20,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2022-01-10 06:12:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:20,641 INFO L225 Difference]: With dead ends: 1400 [2022-01-10 06:12:20,642 INFO L226 Difference]: Without dead ends: 698 [2022-01-10 06:12:20,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:20,665 INFO L933 BasicCegarLoop]: 1133 mSDtfsCounter, 18 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:20,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 4527 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-01-10 06:12:20,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2022-01-10 06:12:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 533 states have (on average 1.622889305816135) internal successors, (865), 555 states have internal predecessors, (865), 130 states have call successors, (130), 36 states have call predecessors, (130), 34 states have return successors, (127), 123 states have call predecessors, (127), 127 states have call successors, (127) [2022-01-10 06:12:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1122 transitions. [2022-01-10 06:12:20,797 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1122 transitions. Word has length 114 [2022-01-10 06:12:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:20,798 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 1122 transitions. [2022-01-10 06:12:20,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1122 transitions. [2022-01-10 06:12:20,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:12:20,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:20,802 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:20,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:21,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:21,016 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:21,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:21,017 INFO L85 PathProgramCache]: Analyzing trace with hash -844999043, now seen corresponding path program 1 times [2022-01-10 06:12:21,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:21,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910930566] [2022-01-10 06:12:21,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:21,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:21,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:21,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:21,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:12:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:21,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:12:21,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:12:21,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:21,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:21,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910930566] [2022-01-10 06:12:21,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910930566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:21,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:21,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:12:21,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017137378] [2022-01-10 06:12:21,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:21,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:12:21,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:21,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:12:21,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:21,428 INFO L87 Difference]: Start difference. First operand 698 states and 1122 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:21,546 INFO L93 Difference]: Finished difference Result 1374 states and 2228 transitions. [2022-01-10 06:12:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:12:21,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2022-01-10 06:12:21,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:21,557 INFO L225 Difference]: With dead ends: 1374 [2022-01-10 06:12:21,557 INFO L226 Difference]: Without dead ends: 697 [2022-01-10 06:12:21,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:21,562 INFO L933 BasicCegarLoop]: 1112 mSDtfsCounter, 1091 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:21,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 1124 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-01-10 06:12:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2022-01-10 06:12:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 533 states have (on average 1.6172607879924954) internal successors, (862), 555 states have internal predecessors, (862), 128 states have call successors, (128), 37 states have call predecessors, (128), 35 states have return successors, (125), 121 states have call predecessors, (125), 125 states have call successors, (125) [2022-01-10 06:12:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1115 transitions. [2022-01-10 06:12:21,596 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1115 transitions. Word has length 115 [2022-01-10 06:12:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:21,598 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 1115 transitions. [2022-01-10 06:12:21,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1115 transitions. [2022-01-10 06:12:21,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 06:12:21,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:21,604 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:12:21,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:21,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:21,818 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -847038133, now seen corresponding path program 1 times [2022-01-10 06:12:21,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:21,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889967914] [2022-01-10 06:12:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:21,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:21,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:21,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:21,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:12:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:22,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:22,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-10 06:12:22,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:22,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:22,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889967914] [2022-01-10 06:12:22,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889967914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:22,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:22,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:22,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918553611] [2022-01-10 06:12:22,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:22,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:22,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:22,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:22,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:22,332 INFO L87 Difference]: Start difference. First operand 697 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:22,485 INFO L93 Difference]: Finished difference Result 1368 states and 2204 transitions. [2022-01-10 06:12:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:22,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2022-01-10 06:12:22,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:22,496 INFO L225 Difference]: With dead ends: 1368 [2022-01-10 06:12:22,496 INFO L226 Difference]: Without dead ends: 701 [2022-01-10 06:12:22,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:22,521 INFO L933 BasicCegarLoop]: 1098 mSDtfsCounter, 15 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:22,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 3285 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-01-10 06:12:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2022-01-10 06:12:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 536 states have (on average 1.6138059701492538) internal successors, (865), 558 states have internal predecessors, (865), 128 states have call successors, (128), 38 states have call predecessors, (128), 36 states have return successors, (125), 121 states have call predecessors, (125), 125 states have call successors, (125) [2022-01-10 06:12:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1118 transitions. [2022-01-10 06:12:22,611 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1118 transitions. Word has length 116 [2022-01-10 06:12:22,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:22,612 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 1118 transitions. [2022-01-10 06:12:22,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1118 transitions. [2022-01-10 06:12:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 06:12:22,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:22,620 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:12:22,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:22,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:22,822 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2102569491, now seen corresponding path program 1 times [2022-01-10 06:12:22,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:22,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293556995] [2022-01-10 06:12:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:22,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:22,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:22,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:22,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:12:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:23,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:23,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:12:23,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:23,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:23,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293556995] [2022-01-10 06:12:23,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293556995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:23,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:23,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:23,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162721669] [2022-01-10 06:12:23,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:23,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:23,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:23,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:23,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:23,739 INFO L87 Difference]: Start difference. First operand 701 states and 1118 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:24,052 INFO L93 Difference]: Finished difference Result 1392 states and 2235 transitions. [2022-01-10 06:12:24,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:24,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2022-01-10 06:12:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:24,057 INFO L225 Difference]: With dead ends: 1392 [2022-01-10 06:12:24,057 INFO L226 Difference]: Without dead ends: 723 [2022-01-10 06:12:24,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:24,061 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 119 mSDsluCounter, 5432 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 6540 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:24,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 6540 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:12:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-01-10 06:12:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 714. [2022-01-10 06:12:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 546 states have (on average 1.6117216117216118) internal successors, (880), 570 states have internal predecessors, (880), 129 states have call successors, (129), 38 states have call predecessors, (129), 38 states have return successors, (131), 122 states have call predecessors, (131), 126 states have call successors, (131) [2022-01-10 06:12:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1140 transitions. [2022-01-10 06:12:24,083 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1140 transitions. Word has length 118 [2022-01-10 06:12:24,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:24,084 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1140 transitions. [2022-01-10 06:12:24,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1140 transitions. [2022-01-10 06:12:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 06:12:24,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:24,086 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:24,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:24,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:24,294 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:24,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2115394473, now seen corresponding path program 1 times [2022-01-10 06:12:24,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:24,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529983199] [2022-01-10 06:12:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:24,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:24,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:24,316 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:24,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:12:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:24,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:24,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:12:24,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:24,877 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:24,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529983199] [2022-01-10 06:12:24,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529983199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:24,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:24,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:24,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553429419] [2022-01-10 06:12:24,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:24,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:24,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:24,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:24,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:24,880 INFO L87 Difference]: Start difference. First operand 714 states and 1140 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:25,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:25,155 INFO L93 Difference]: Finished difference Result 1412 states and 2268 transitions. [2022-01-10 06:12:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:25,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-01-10 06:12:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:25,164 INFO L225 Difference]: With dead ends: 1412 [2022-01-10 06:12:25,165 INFO L226 Difference]: Without dead ends: 732 [2022-01-10 06:12:25,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:25,172 INFO L933 BasicCegarLoop]: 1118 mSDtfsCounter, 105 mSDsluCounter, 5459 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:25,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 6577 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:12:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-01-10 06:12:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 714. [2022-01-10 06:12:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 546 states have (on average 1.6117216117216118) internal successors, (880), 570 states have internal predecessors, (880), 129 states have call successors, (129), 38 states have call predecessors, (129), 38 states have return successors, (131), 122 states have call predecessors, (131), 126 states have call successors, (131) [2022-01-10 06:12:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1140 transitions. [2022-01-10 06:12:25,207 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1140 transitions. Word has length 119 [2022-01-10 06:12:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:25,208 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1140 transitions. [2022-01-10 06:12:25,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1140 transitions. [2022-01-10 06:12:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 06:12:25,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:25,210 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:25,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:25,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:25,424 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 50259676, now seen corresponding path program 1 times [2022-01-10 06:12:25,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:25,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73758242] [2022-01-10 06:12:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:25,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:25,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:25,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:25,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:12:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:25,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:25,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-10 06:12:27,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:27,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:27,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73758242] [2022-01-10 06:12:27,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73758242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:27,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:27,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:27,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471583787] [2022-01-10 06:12:27,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:27,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:27,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:27,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:27,615 INFO L87 Difference]: Start difference. First operand 714 states and 1140 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:27,833 INFO L93 Difference]: Finished difference Result 1397 states and 2243 transitions. [2022-01-10 06:12:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:27,840 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2022-01-10 06:12:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:27,877 INFO L225 Difference]: With dead ends: 1397 [2022-01-10 06:12:27,877 INFO L226 Difference]: Without dead ends: 715 [2022-01-10 06:12:27,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:27,885 INFO L933 BasicCegarLoop]: 1098 mSDtfsCounter, 22 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:27,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 3285 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-01-10 06:12:27,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2022-01-10 06:12:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 548 states have (on average 1.6113138686131387) internal successors, (883), 571 states have internal predecessors, (883), 128 states have call successors, (128), 39 states have call predecessors, (128), 38 states have return successors, (127), 121 states have call predecessors, (127), 125 states have call successors, (127) [2022-01-10 06:12:27,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1138 transitions. [2022-01-10 06:12:27,912 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1138 transitions. Word has length 119 [2022-01-10 06:12:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:27,913 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 1138 transitions. [2022-01-10 06:12:27,913 INFO L471 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:27,913 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1138 transitions. [2022-01-10 06:12:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 06:12:27,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:27,915 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:27,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:28,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:28,146 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash -769052648, now seen corresponding path program 1 times [2022-01-10 06:12:28,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:28,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539114626] [2022-01-10 06:12:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:28,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:28,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:28,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:12:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:28,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:28,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:12:28,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:28,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:28,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539114626] [2022-01-10 06:12:28,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539114626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:28,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:28,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:28,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067448022] [2022-01-10 06:12:28,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:28,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:28,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:28,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:28,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:28,633 INFO L87 Difference]: Start difference. First operand 715 states and 1138 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:28,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:28,947 INFO L93 Difference]: Finished difference Result 1402 states and 2248 transitions. [2022-01-10 06:12:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:28,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2022-01-10 06:12:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:28,955 INFO L225 Difference]: With dead ends: 1402 [2022-01-10 06:12:28,955 INFO L226 Difference]: Without dead ends: 724 [2022-01-10 06:12:28,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:28,972 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 104 mSDsluCounter, 5420 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 6531 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:28,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 6531 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:12:28,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-01-10 06:12:29,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 715. [2022-01-10 06:12:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 548 states have (on average 1.6113138686131387) internal successors, (883), 571 states have internal predecessors, (883), 128 states have call successors, (128), 39 states have call predecessors, (128), 38 states have return successors, (127), 121 states have call predecessors, (127), 125 states have call successors, (127) [2022-01-10 06:12:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1138 transitions. [2022-01-10 06:12:29,026 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1138 transitions. Word has length 121 [2022-01-10 06:12:29,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:29,027 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 1138 transitions. [2022-01-10 06:12:29,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1138 transitions. [2022-01-10 06:12:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 06:12:29,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:29,029 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:29,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:29,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:29,242 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:29,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1069861588, now seen corresponding path program 1 times [2022-01-10 06:12:29,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:29,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593562154] [2022-01-10 06:12:29,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:29,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:29,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:29,264 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:29,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:12:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:29,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:29,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:12:30,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:30,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:30,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593562154] [2022-01-10 06:12:30,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593562154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:30,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:30,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:30,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259829146] [2022-01-10 06:12:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:30,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:30,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:30,033 INFO L87 Difference]: Start difference. First operand 715 states and 1138 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:30,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:30,307 INFO L93 Difference]: Finished difference Result 1422 states and 2286 transitions. [2022-01-10 06:12:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:30,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2022-01-10 06:12:30,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:30,316 INFO L225 Difference]: With dead ends: 1422 [2022-01-10 06:12:30,316 INFO L226 Difference]: Without dead ends: 744 [2022-01-10 06:12:30,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:30,320 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 112 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:30,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 3129 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:12:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-01-10 06:12:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 735. [2022-01-10 06:12:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 567 states have (on average 1.6084656084656084) internal successors, (912), 590 states have internal predecessors, (912), 128 states have call successors, (128), 40 states have call predecessors, (128), 39 states have return successors, (126), 121 states have call predecessors, (126), 125 states have call successors, (126) [2022-01-10 06:12:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1166 transitions. [2022-01-10 06:12:30,360 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1166 transitions. Word has length 122 [2022-01-10 06:12:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:30,360 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1166 transitions. [2022-01-10 06:12:30,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1166 transitions. [2022-01-10 06:12:30,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 06:12:30,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:30,362 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:30,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 06:12:30,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:30,581 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:30,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:30,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1510816660, now seen corresponding path program 1 times [2022-01-10 06:12:30,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:30,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514663617] [2022-01-10 06:12:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:30,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:30,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:30,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:30,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:12:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:30,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:30,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:12:31,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:31,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:31,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514663617] [2022-01-10 06:12:31,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514663617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:31,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:31,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:31,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947258951] [2022-01-10 06:12:31,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:31,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:31,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:31,203 INFO L87 Difference]: Start difference. First operand 735 states and 1166 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:31,427 INFO L93 Difference]: Finished difference Result 1451 states and 2317 transitions. [2022-01-10 06:12:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2022-01-10 06:12:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:31,433 INFO L225 Difference]: With dead ends: 1451 [2022-01-10 06:12:31,433 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:12:31,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:31,448 INFO L933 BasicCegarLoop]: 1099 mSDtfsCounter, 154 mSDsluCounter, 5348 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 6447 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:31,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 6447 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:12:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 735. [2022-01-10 06:12:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 567 states have (on average 1.6084656084656084) internal successors, (912), 590 states have internal predecessors, (912), 128 states have call successors, (128), 40 states have call predecessors, (128), 39 states have return successors, (126), 121 states have call predecessors, (126), 125 states have call successors, (126) [2022-01-10 06:12:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1166 transitions. [2022-01-10 06:12:31,483 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1166 transitions. Word has length 123 [2022-01-10 06:12:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:31,483 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1166 transitions. [2022-01-10 06:12:31,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:31,484 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1166 transitions. [2022-01-10 06:12:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 06:12:31,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:31,485 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:31,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:31,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:31,701 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:31,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1737149002, now seen corresponding path program 1 times [2022-01-10 06:12:31,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:31,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055539137] [2022-01-10 06:12:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:31,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:31,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:31,703 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:31,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:12:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:32,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:12:32,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:12:32,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:32,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:32,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055539137] [2022-01-10 06:12:32,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055539137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:32,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:32,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:12:32,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243648006] [2022-01-10 06:12:32,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:32,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:12:32,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:32,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:12:32,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:32,356 INFO L87 Difference]: Start difference. First operand 735 states and 1166 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:32,635 INFO L93 Difference]: Finished difference Result 1446 states and 2308 transitions. [2022-01-10 06:12:32,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:12:32,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2022-01-10 06:12:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:32,640 INFO L225 Difference]: With dead ends: 1446 [2022-01-10 06:12:32,640 INFO L226 Difference]: Without dead ends: 748 [2022-01-10 06:12:32,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:12:32,644 INFO L933 BasicCegarLoop]: 1089 mSDtfsCounter, 112 mSDsluCounter, 6427 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 7516 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:32,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 7516 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:12:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-01-10 06:12:32,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 739. [2022-01-10 06:12:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 571 states have (on average 1.6042031523642732) internal successors, (916), 594 states have internal predecessors, (916), 128 states have call successors, (128), 40 states have call predecessors, (128), 39 states have return successors, (126), 121 states have call predecessors, (126), 125 states have call successors, (126) [2022-01-10 06:12:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1170 transitions. [2022-01-10 06:12:32,679 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1170 transitions. Word has length 124 [2022-01-10 06:12:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:32,679 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 1170 transitions. [2022-01-10 06:12:32,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:32,680 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1170 transitions. [2022-01-10 06:12:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 06:12:32,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:32,681 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:32,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:32,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:32,894 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash 367209644, now seen corresponding path program 1 times [2022-01-10 06:12:32,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:32,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602749456] [2022-01-10 06:12:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:32,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:32,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:32,900 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:32,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:12:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:33,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:12:33,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:12:33,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:33,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:33,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602749456] [2022-01-10 06:12:33,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602749456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:33,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:33,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:12:33,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898876979] [2022-01-10 06:12:33,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:33,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:12:33,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:33,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:12:33,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:33,372 INFO L87 Difference]: Start difference. First operand 739 states and 1170 transitions. Second operand has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:33,589 INFO L93 Difference]: Finished difference Result 1456 states and 2320 transitions. [2022-01-10 06:12:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:12:33,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2022-01-10 06:12:33,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:33,595 INFO L225 Difference]: With dead ends: 1456 [2022-01-10 06:12:33,595 INFO L226 Difference]: Without dead ends: 754 [2022-01-10 06:12:33,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:12:33,598 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 108 mSDsluCounter, 6433 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 7524 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:33,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 7524 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:12:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-01-10 06:12:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 745. [2022-01-10 06:12:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 577 states have (on average 1.5979202772963605) internal successors, (922), 600 states have internal predecessors, (922), 128 states have call successors, (128), 40 states have call predecessors, (128), 39 states have return successors, (126), 121 states have call predecessors, (126), 125 states have call successors, (126) [2022-01-10 06:12:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1176 transitions. [2022-01-10 06:12:33,620 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1176 transitions. Word has length 125 [2022-01-10 06:12:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:33,621 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1176 transitions. [2022-01-10 06:12:33,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1176 transitions. [2022-01-10 06:12:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 06:12:33,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:33,623 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:33,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:33,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:33,835 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:33,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1569614129, now seen corresponding path program 1 times [2022-01-10 06:12:33,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:33,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765895581] [2022-01-10 06:12:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:33,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:33,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:33,838 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:33,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:12:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:34,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:12:34,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:12:34,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:34,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:34,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765895581] [2022-01-10 06:12:34,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765895581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:34,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:34,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:12:34,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527204037] [2022-01-10 06:12:34,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:34,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:12:34,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:34,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:12:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:34,305 INFO L87 Difference]: Start difference. First operand 745 states and 1176 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:34,517 INFO L93 Difference]: Finished difference Result 1470 states and 2336 transitions. [2022-01-10 06:12:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:12:34,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 126 [2022-01-10 06:12:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:34,523 INFO L225 Difference]: With dead ends: 1470 [2022-01-10 06:12:34,524 INFO L226 Difference]: Without dead ends: 762 [2022-01-10 06:12:34,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:12:34,527 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 108 mSDsluCounter, 6433 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 7524 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:34,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 7524 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:12:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-01-10 06:12:34,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 753. [2022-01-10 06:12:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 585 states have (on average 1.5897435897435896) internal successors, (930), 608 states have internal predecessors, (930), 128 states have call successors, (128), 40 states have call predecessors, (128), 39 states have return successors, (126), 121 states have call predecessors, (126), 125 states have call successors, (126) [2022-01-10 06:12:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1184 transitions. [2022-01-10 06:12:34,545 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1184 transitions. Word has length 126 [2022-01-10 06:12:34,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:34,546 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1184 transitions. [2022-01-10 06:12:34,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1184 transitions. [2022-01-10 06:12:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:12:34,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:34,548 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:34,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:34,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:34,764 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash 394981713, now seen corresponding path program 1 times [2022-01-10 06:12:34,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:34,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530257893] [2022-01-10 06:12:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:34,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:34,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:34,779 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:34,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:12:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:35,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:35,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:12:35,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:35,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:35,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530257893] [2022-01-10 06:12:35,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530257893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:35,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:35,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:35,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639470945] [2022-01-10 06:12:35,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:35,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:35,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:35,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:35,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:35,206 INFO L87 Difference]: Start difference. First operand 753 states and 1184 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:35,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:35,379 INFO L93 Difference]: Finished difference Result 1403 states and 2211 transitions. [2022-01-10 06:12:35,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:35,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2022-01-10 06:12:35,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:35,388 INFO L225 Difference]: With dead ends: 1403 [2022-01-10 06:12:35,388 INFO L226 Difference]: Without dead ends: 765 [2022-01-10 06:12:35,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:35,392 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 98 mSDsluCounter, 5403 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 6504 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:35,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 6504 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-01-10 06:12:35,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 760. [2022-01-10 06:12:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 589 states have (on average 1.5857385398981325) internal successors, (934), 614 states have internal predecessors, (934), 129 states have call successors, (129), 40 states have call predecessors, (129), 41 states have return successors, (130), 122 states have call predecessors, (130), 126 states have call successors, (130) [2022-01-10 06:12:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1193 transitions. [2022-01-10 06:12:35,413 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1193 transitions. Word has length 127 [2022-01-10 06:12:35,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:35,413 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1193 transitions. [2022-01-10 06:12:35,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1193 transitions. [2022-01-10 06:12:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:12:35,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:35,415 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:35,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:35,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:35,629 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:35,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1826945446, now seen corresponding path program 1 times [2022-01-10 06:12:35,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:35,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40284881] [2022-01-10 06:12:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:35,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:35,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:35,632 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:35,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:12:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:35,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:35,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 06:12:36,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:36,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:36,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40284881] [2022-01-10 06:12:36,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40284881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:36,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:36,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:36,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495138998] [2022-01-10 06:12:36,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:36,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:36,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:36,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:36,086 INFO L87 Difference]: Start difference. First operand 760 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:36,134 INFO L93 Difference]: Finished difference Result 1467 states and 2316 transitions. [2022-01-10 06:12:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2022-01-10 06:12:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:36,138 INFO L225 Difference]: With dead ends: 1467 [2022-01-10 06:12:36,139 INFO L226 Difference]: Without dead ends: 742 [2022-01-10 06:12:36,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:36,142 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 24 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:36,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 3284 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-01-10 06:12:36,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2022-01-10 06:12:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 574 states have (on average 1.5801393728222997) internal successors, (907), 597 states have internal predecessors, (907), 128 states have call successors, (128), 40 states have call predecessors, (128), 39 states have return successors, (126), 121 states have call predecessors, (126), 125 states have call successors, (126) [2022-01-10 06:12:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1161 transitions. [2022-01-10 06:12:36,159 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1161 transitions. Word has length 128 [2022-01-10 06:12:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:36,160 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1161 transitions. [2022-01-10 06:12:36,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1161 transitions. [2022-01-10 06:12:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:12:36,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:36,161 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:36,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:36,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:36,374 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:36,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1909265465, now seen corresponding path program 1 times [2022-01-10 06:12:36,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:36,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340982126] [2022-01-10 06:12:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:36,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:36,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:36,376 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:36,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:12:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:36,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:36,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:12:36,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:36,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:36,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340982126] [2022-01-10 06:12:36,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340982126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:36,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:36,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:36,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864673673] [2022-01-10 06:12:36,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:36,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:36,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:36,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:36,801 INFO L87 Difference]: Start difference. First operand 742 states and 1161 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:36,942 INFO L93 Difference]: Finished difference Result 1386 states and 2179 transitions. [2022-01-10 06:12:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:36,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 129 [2022-01-10 06:12:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:36,948 INFO L225 Difference]: With dead ends: 1386 [2022-01-10 06:12:36,948 INFO L226 Difference]: Without dead ends: 736 [2022-01-10 06:12:36,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:36,952 INFO L933 BasicCegarLoop]: 1081 mSDtfsCounter, 87 mSDsluCounter, 5317 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 6398 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:36,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 6398 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-01-10 06:12:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 733. [2022-01-10 06:12:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 565 states have (on average 1.5769911504424778) internal successors, (891), 588 states have internal predecessors, (891), 128 states have call successors, (128), 40 states have call predecessors, (128), 39 states have return successors, (126), 121 states have call predecessors, (126), 125 states have call successors, (126) [2022-01-10 06:12:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1145 transitions. [2022-01-10 06:12:36,970 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1145 transitions. Word has length 129 [2022-01-10 06:12:36,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:36,970 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 1145 transitions. [2022-01-10 06:12:36,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1145 transitions. [2022-01-10 06:12:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:12:36,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:36,972 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:37,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 06:12:37,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:37,184 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:37,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2039100757, now seen corresponding path program 1 times [2022-01-10 06:12:37,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:37,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879642245] [2022-01-10 06:12:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:37,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:37,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:37,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:37,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:12:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:37,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:37,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:12:37,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:37,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:37,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879642245] [2022-01-10 06:12:37,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879642245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:37,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:37,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:37,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240460590] [2022-01-10 06:12:37,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:37,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:37,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:37,643 INFO L87 Difference]: Start difference. First operand 733 states and 1145 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:37,790 INFO L93 Difference]: Finished difference Result 1377 states and 2163 transitions. [2022-01-10 06:12:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:37,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 129 [2022-01-10 06:12:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:37,799 INFO L225 Difference]: With dead ends: 1377 [2022-01-10 06:12:37,799 INFO L226 Difference]: Without dead ends: 723 [2022-01-10 06:12:37,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:37,802 INFO L933 BasicCegarLoop]: 1073 mSDtfsCounter, 99 mSDsluCounter, 5261 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 6334 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:37,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 6334 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-01-10 06:12:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 720. [2022-01-10 06:12:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 552 states have (on average 1.5615942028985508) internal successors, (862), 575 states have internal predecessors, (862), 128 states have call successors, (128), 40 states have call predecessors, (128), 39 states have return successors, (125), 121 states have call predecessors, (125), 125 states have call successors, (125) [2022-01-10 06:12:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1115 transitions. [2022-01-10 06:12:37,826 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1115 transitions. Word has length 129 [2022-01-10 06:12:37,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:37,827 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 1115 transitions. [2022-01-10 06:12:37,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1115 transitions. [2022-01-10 06:12:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:12:37,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:37,828 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:37,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:38,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:38,042 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1858075528, now seen corresponding path program 1 times [2022-01-10 06:12:38,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:38,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102346628] [2022-01-10 06:12:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:38,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:38,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:38,044 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:38,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:12:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:38,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:38,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:12:38,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:38,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:38,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102346628] [2022-01-10 06:12:38,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102346628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:38,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:38,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:38,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176889007] [2022-01-10 06:12:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:38,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:38,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:38,488 INFO L87 Difference]: Start difference. First operand 720 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:38,623 INFO L93 Difference]: Finished difference Result 1428 states and 2220 transitions. [2022-01-10 06:12:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:38,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2022-01-10 06:12:38,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:38,629 INFO L225 Difference]: With dead ends: 1428 [2022-01-10 06:12:38,629 INFO L226 Difference]: Without dead ends: 720 [2022-01-10 06:12:38,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:38,633 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 76 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:38,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 3097 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-01-10 06:12:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2022-01-10 06:12:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 552 states have (on average 1.5471014492753623) internal successors, (854), 574 states have internal predecessors, (854), 128 states have call successors, (128), 41 states have call predecessors, (128), 39 states have return successors, (125), 121 states have call predecessors, (125), 125 states have call successors, (125) [2022-01-10 06:12:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1107 transitions. [2022-01-10 06:12:38,652 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1107 transitions. Word has length 131 [2022-01-10 06:12:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:38,653 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 1107 transitions. [2022-01-10 06:12:38,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1107 transitions. [2022-01-10 06:12:38,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:12:38,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:38,656 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:38,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:38,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:38,868 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1480202400, now seen corresponding path program 1 times [2022-01-10 06:12:38,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:38,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056103715] [2022-01-10 06:12:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:38,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:38,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:38,870 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:38,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:12:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:39,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:12:39,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-01-10 06:12:39,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:39,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:39,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056103715] [2022-01-10 06:12:39,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056103715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:39,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:39,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:12:39,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291914022] [2022-01-10 06:12:39,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:39,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:12:39,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:39,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:12:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:39,313 INFO L87 Difference]: Start difference. First operand 720 states and 1107 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:39,410 INFO L93 Difference]: Finished difference Result 2041 states and 3189 transitions. [2022-01-10 06:12:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:12:39,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2022-01-10 06:12:39,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:39,417 INFO L225 Difference]: With dead ends: 2041 [2022-01-10 06:12:39,418 INFO L226 Difference]: Without dead ends: 1407 [2022-01-10 06:12:39,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:39,421 INFO L933 BasicCegarLoop]: 1275 mSDtfsCounter, 992 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:39,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 2307 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2022-01-10 06:12:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1403. [2022-01-10 06:12:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1082 states have (on average 1.5536044362292052) internal successors, (1681), 1121 states have internal predecessors, (1681), 244 states have call successors, (244), 79 states have call predecessors, (244), 76 states have return successors, (246), 235 states have call predecessors, (246), 240 states have call successors, (246) [2022-01-10 06:12:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2171 transitions. [2022-01-10 06:12:39,458 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2171 transitions. Word has length 132 [2022-01-10 06:12:39,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:39,459 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 2171 transitions. [2022-01-10 06:12:39,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:12:39,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2171 transitions. [2022-01-10 06:12:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:12:39,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:39,462 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2022-01-10 06:12:39,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:39,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:39,674 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 796580207, now seen corresponding path program 1 times [2022-01-10 06:12:39,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:39,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788278739] [2022-01-10 06:12:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:39,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:39,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:39,677 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:39,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:12:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:39,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:12:39,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-01-10 06:12:40,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:40,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:40,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788278739] [2022-01-10 06:12:40,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788278739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:40,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:40,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:12:40,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220278623] [2022-01-10 06:12:40,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:40,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:12:40,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:12:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:40,415 INFO L87 Difference]: Start difference. First operand 1403 states and 2171 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:40,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:40,692 INFO L93 Difference]: Finished difference Result 3904 states and 6208 transitions. [2022-01-10 06:12:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:12:40,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2022-01-10 06:12:40,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:40,706 INFO L225 Difference]: With dead ends: 3904 [2022-01-10 06:12:40,706 INFO L226 Difference]: Without dead ends: 2652 [2022-01-10 06:12:40,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:40,712 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 976 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:40,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 2207 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:12:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2022-01-10 06:12:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2622. [2022-01-10 06:12:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2018 states have (on average 1.5777998017839445) internal successors, (3184), 2092 states have internal predecessors, (3184), 465 states have call successors, (465), 143 states have call predecessors, (465), 138 states have return successors, (516), 447 states have call predecessors, (516), 459 states have call successors, (516) [2022-01-10 06:12:40,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 4165 transitions. [2022-01-10 06:12:40,852 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 4165 transitions. Word has length 133 [2022-01-10 06:12:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:40,852 INFO L470 AbstractCegarLoop]: Abstraction has 2622 states and 4165 transitions. [2022-01-10 06:12:40,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 06:12:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 4165 transitions. [2022-01-10 06:12:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-10 06:12:40,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:40,859 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 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] [2022-01-10 06:12:40,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:41,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:41,076 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:41,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash -583979523, now seen corresponding path program 1 times [2022-01-10 06:12:41,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:41,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506799640] [2022-01-10 06:12:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:41,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:41,078 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:41,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:12:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:41,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:12:41,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-10 06:12:41,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:41,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:41,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506799640] [2022-01-10 06:12:41,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506799640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:41,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:41,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:41,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777632189] [2022-01-10 06:12:41,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:41,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:12:41,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:41,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:12:41,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:41,666 INFO L87 Difference]: Start difference. First operand 2622 states and 4165 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 06:12:42,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:42,419 INFO L93 Difference]: Finished difference Result 5110 states and 8323 transitions. [2022-01-10 06:12:42,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:12:42,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2022-01-10 06:12:42,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:42,449 INFO L225 Difference]: With dead ends: 5110 [2022-01-10 06:12:42,449 INFO L226 Difference]: Without dead ends: 2638 [2022-01-10 06:12:42,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:12:42,468 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 960 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:42,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 2622 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 06:12:42,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-01-10 06:12:42,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2638. [2022-01-10 06:12:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2030 states have (on average 1.574384236453202) internal successors, (3196), 2104 states have internal predecessors, (3196), 465 states have call successors, (465), 147 states have call predecessors, (465), 142 states have return successors, (520), 447 states have call predecessors, (520), 459 states have call successors, (520) [2022-01-10 06:12:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4181 transitions. [2022-01-10 06:12:42,692 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4181 transitions. Word has length 187 [2022-01-10 06:12:42,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:42,693 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 4181 transitions. [2022-01-10 06:12:42,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 06:12:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4181 transitions. [2022-01-10 06:12:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 06:12:42,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:42,702 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:12:42,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:42,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:42,917 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:42,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1349562425, now seen corresponding path program 1 times [2022-01-10 06:12:42,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:42,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757438370] [2022-01-10 06:12:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:42,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:42,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:42,919 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:42,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:12:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:43,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:12:43,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 06:12:43,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:43,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:43,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757438370] [2022-01-10 06:12:43,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757438370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:43,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:43,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:12:43,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495747595] [2022-01-10 06:12:43,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:43,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:12:43,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:43,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:12:43,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:43,560 INFO L87 Difference]: Start difference. First operand 2638 states and 4181 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-01-10 06:12:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:43,623 INFO L93 Difference]: Finished difference Result 3883 states and 6170 transitions. [2022-01-10 06:12:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:12:43,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 189 [2022-01-10 06:12:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:43,634 INFO L225 Difference]: With dead ends: 3883 [2022-01-10 06:12:43,634 INFO L226 Difference]: Without dead ends: 2642 [2022-01-10 06:12:43,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:43,640 INFO L933 BasicCegarLoop]: 2078 mSDtfsCounter, 976 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:43,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 3119 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2022-01-10 06:12:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2027. [2022-01-10 06:12:43,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1561 states have (on average 1.5637411915438821) internal successors, (2441), 1618 states have internal predecessors, (2441), 355 states have call successors, (355), 114 states have call predecessors, (355), 110 states have return successors, (374), 341 states have call predecessors, (374), 350 states have call successors, (374) [2022-01-10 06:12:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3170 transitions. [2022-01-10 06:12:43,699 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3170 transitions. Word has length 189 [2022-01-10 06:12:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:43,700 INFO L470 AbstractCegarLoop]: Abstraction has 2027 states and 3170 transitions. [2022-01-10 06:12:43,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-01-10 06:12:43,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3170 transitions. [2022-01-10 06:12:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-10 06:12:43,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:43,705 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:12:43,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:43,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:43,920 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:43,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1351431978, now seen corresponding path program 1 times [2022-01-10 06:12:43,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:43,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508141774] [2022-01-10 06:12:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:43,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:43,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:43,928 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:43,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:12:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:44,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:12:44,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 06:12:45,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:45,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:45,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508141774] [2022-01-10 06:12:45,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508141774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:45,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:45,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:45,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400090977] [2022-01-10 06:12:45,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:45,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:12:45,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:45,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:12:45,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:45,779 INFO L87 Difference]: Start difference. First operand 2027 states and 3170 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-01-10 06:12:51,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:51,636 INFO L93 Difference]: Finished difference Result 6099 states and 9831 transitions. [2022-01-10 06:12:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:12:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 188 [2022-01-10 06:12:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:51,667 INFO L225 Difference]: With dead ends: 6099 [2022-01-10 06:12:51,668 INFO L226 Difference]: Without dead ends: 4222 [2022-01-10 06:12:51,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:12:51,674 INFO L933 BasicCegarLoop]: 1907 mSDtfsCounter, 5922 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 4977 mSolverCounterSat, 1652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6156 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 6629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1652 IncrementalHoareTripleChecker+Valid, 4977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:51,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6156 Valid, 3109 Invalid, 6629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1652 Valid, 4977 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-01-10 06:12:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4222 states. [2022-01-10 06:12:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4222 to 4032. [2022-01-10 06:12:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 3063 states have (on average 1.5798237022526935) internal successors, (4839), 3194 states have internal predecessors, (4839), 754 states have call successors, (754), 211 states have call predecessors, (754), 214 states have return successors, (906), 735 states have call predecessors, (906), 746 states have call successors, (906) [2022-01-10 06:12:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 6499 transitions. [2022-01-10 06:12:51,852 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 6499 transitions. Word has length 188 [2022-01-10 06:12:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:51,852 INFO L470 AbstractCegarLoop]: Abstraction has 4032 states and 6499 transitions. [2022-01-10 06:12:51,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-01-10 06:12:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 6499 transitions. [2022-01-10 06:12:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 06:12:51,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:51,858 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 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] [2022-01-10 06:12:51,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:52,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:52,071 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:52,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:52,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1423514345, now seen corresponding path program 1 times [2022-01-10 06:12:52,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:52,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573807855] [2022-01-10 06:12:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:52,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:52,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:52,073 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:52,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:12:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:52,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:12:52,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:52,684 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-10 06:12:52,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:52,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:52,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573807855] [2022-01-10 06:12:52,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573807855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:52,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:52,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:52,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865448779] [2022-01-10 06:12:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:52,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:12:52,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:52,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:12:52,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:52,687 INFO L87 Difference]: Start difference. First operand 4032 states and 6499 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 06:12:53,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:53,592 INFO L93 Difference]: Finished difference Result 7944 states and 13071 transitions. [2022-01-10 06:12:53,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:12:53,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 189 [2022-01-10 06:12:53,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:53,628 INFO L225 Difference]: With dead ends: 7944 [2022-01-10 06:12:53,629 INFO L226 Difference]: Without dead ends: 4062 [2022-01-10 06:12:53,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:12:53,647 INFO L933 BasicCegarLoop]: 1034 mSDtfsCounter, 963 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:53,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 2623 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 06:12:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2022-01-10 06:12:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4062. [2022-01-10 06:12:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 3087 states have (on average 1.5753158406219632) internal successors, (4863), 3218 states have internal predecessors, (4863), 754 states have call successors, (754), 217 states have call predecessors, (754), 220 states have return successors, (910), 735 states have call predecessors, (910), 746 states have call successors, (910) [2022-01-10 06:12:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 6527 transitions. [2022-01-10 06:12:53,792 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 6527 transitions. Word has length 189 [2022-01-10 06:12:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:53,792 INFO L470 AbstractCegarLoop]: Abstraction has 4062 states and 6527 transitions. [2022-01-10 06:12:53,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 06:12:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 6527 transitions. [2022-01-10 06:12:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 06:12:53,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:53,798 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:12:53,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:54,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:54,012 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2068720817, now seen corresponding path program 1 times [2022-01-10 06:12:54,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:54,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466487907] [2022-01-10 06:12:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:54,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:54,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:54,023 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:54,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:12:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:54,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 06:12:54,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-10 06:12:54,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:12:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-10 06:12:55,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:55,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466487907] [2022-01-10 06:12:55,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466487907] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:12:55,509 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:12:55,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-10 06:12:55,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082640545] [2022-01-10 06:12:55,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:12:55,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 06:12:55,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:55,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 06:12:55,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:12:55,511 INFO L87 Difference]: Start difference. First operand 4062 states and 6527 transitions. Second operand has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 12 states have internal predecessors, (186), 8 states have call successors, (47), 6 states have call predecessors, (47), 10 states have return successors, (45), 10 states have call predecessors, (45), 8 states have call successors, (45) [2022-01-10 06:13:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:01,562 INFO L93 Difference]: Finished difference Result 12386 states and 20406 transitions. [2022-01-10 06:13:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 06:13:01,563 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 12 states have internal predecessors, (186), 8 states have call successors, (47), 6 states have call predecessors, (47), 10 states have return successors, (45), 10 states have call predecessors, (45), 8 states have call successors, (45) Word has length 190 [2022-01-10 06:13:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:01,615 INFO L225 Difference]: With dead ends: 12386 [2022-01-10 06:13:01,616 INFO L226 Difference]: Without dead ends: 8474 [2022-01-10 06:13:01,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-01-10 06:13:01,635 INFO L933 BasicCegarLoop]: 1892 mSDtfsCounter, 5448 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 9310 mSolverCounterSat, 1762 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5543 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 11072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1762 IncrementalHoareTripleChecker+Valid, 9310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:01,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5543 Valid, 5413 Invalid, 11072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1762 Valid, 9310 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-01-10 06:13:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2022-01-10 06:13:01,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 8252. [2022-01-10 06:13:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8252 states, 6096 states have (on average 1.5828412073490814) internal successors, (9649), 6403 states have internal predecessors, (9649), 1701 states have call successors, (1701), 403 states have call predecessors, (1701), 454 states have return successors, (2214), 1703 states have call predecessors, (2214), 1687 states have call successors, (2214) [2022-01-10 06:13:02,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8252 states to 8252 states and 13564 transitions. [2022-01-10 06:13:02,061 INFO L78 Accepts]: Start accepts. Automaton has 8252 states and 13564 transitions. Word has length 190 [2022-01-10 06:13:02,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:02,062 INFO L470 AbstractCegarLoop]: Abstraction has 8252 states and 13564 transitions. [2022-01-10 06:13:02,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.285714285714286) internal successors, (186), 12 states have internal predecessors, (186), 8 states have call successors, (47), 6 states have call predecessors, (47), 10 states have return successors, (45), 10 states have call predecessors, (45), 8 states have call successors, (45) [2022-01-10 06:13:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand 8252 states and 13564 transitions. [2022-01-10 06:13:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 06:13:02,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:02,072 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:13:02,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:02,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:02,292 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:02,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1051038979, now seen corresponding path program 1 times [2022-01-10 06:13:02,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:02,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343916989] [2022-01-10 06:13:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:02,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:02,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:02,294 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:02,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:13:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:02,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:13:02,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-10 06:13:02,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:02,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:02,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343916989] [2022-01-10 06:13:02,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343916989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:02,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:02,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:13:02,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009782343] [2022-01-10 06:13:02,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:02,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:13:02,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:13:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:13:02,904 INFO L87 Difference]: Start difference. First operand 8252 states and 13564 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 06:13:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:03,967 INFO L93 Difference]: Finished difference Result 16426 states and 27459 transitions. [2022-01-10 06:13:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:13:03,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 191 [2022-01-10 06:13:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:04,020 INFO L225 Difference]: With dead ends: 16426 [2022-01-10 06:13:04,021 INFO L226 Difference]: Without dead ends: 8324 [2022-01-10 06:13:04,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:13:04,061 INFO L933 BasicCegarLoop]: 1034 mSDtfsCounter, 961 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:04,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 2623 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 06:13:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8324 states. [2022-01-10 06:13:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8324 to 8324. [2022-01-10 06:13:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8324 states, 6156 states have (on average 1.5771604938271604) internal successors, (9709), 6463 states have internal predecessors, (9709), 1701 states have call successors, (1701), 415 states have call predecessors, (1701), 466 states have return successors, (2210), 1703 states have call predecessors, (2210), 1687 states have call successors, (2210) [2022-01-10 06:13:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8324 states to 8324 states and 13620 transitions. [2022-01-10 06:13:04,446 INFO L78 Accepts]: Start accepts. Automaton has 8324 states and 13620 transitions. Word has length 191 [2022-01-10 06:13:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:04,446 INFO L470 AbstractCegarLoop]: Abstraction has 8324 states and 13620 transitions. [2022-01-10 06:13:04,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 06:13:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8324 states and 13620 transitions. [2022-01-10 06:13:04,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-10 06:13:04,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:04,454 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:04,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:04,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:04,671 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash 464715825, now seen corresponding path program 1 times [2022-01-10 06:13:04,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:04,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399813572] [2022-01-10 06:13:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:04,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:04,673 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:04,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:13:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:05,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:13:05,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-01-10 06:13:05,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:13:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 06:13:05,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:05,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399813572] [2022-01-10 06:13:05,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399813572] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:13:05,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:13:05,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-01-10 06:13:05,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858888094] [2022-01-10 06:13:05,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:13:05,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:13:05,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:13:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:13:05,941 INFO L87 Difference]: Start difference. First operand 8324 states and 13620 transitions. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 6 states have call successors, (42), 5 states have call predecessors, (42), 7 states have return successors, (39), 5 states have call predecessors, (39), 6 states have call successors, (39) [2022-01-10 06:13:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:13,983 INFO L93 Difference]: Finished difference Result 33446 states and 56026 transitions. [2022-01-10 06:13:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:13:13,984 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 6 states have call successors, (42), 5 states have call predecessors, (42), 7 states have return successors, (39), 5 states have call predecessors, (39), 6 states have call successors, (39) Word has length 192 [2022-01-10 06:13:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:14,265 INFO L225 Difference]: With dead ends: 33446 [2022-01-10 06:13:14,265 INFO L226 Difference]: Without dead ends: 25272 [2022-01-10 06:13:14,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-01-10 06:13:14,319 INFO L933 BasicCegarLoop]: 1856 mSDtfsCounter, 4985 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 7534 mSolverCounterSat, 1638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5106 SdHoareTripleChecker+Valid, 4058 SdHoareTripleChecker+Invalid, 9172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1638 IncrementalHoareTripleChecker+Valid, 7534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:14,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5106 Valid, 4058 Invalid, 9172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1638 Valid, 7534 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-01-10 06:13:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25272 states. [2022-01-10 06:13:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25272 to 23618. [2022-01-10 06:13:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23618 states, 17280 states have (on average 1.5539930555555554) internal successors, (26853), 18175 states have internal predecessors, (26853), 4927 states have call successors, (4927), 1247 states have call predecessors, (4927), 1410 states have return successors, (6980), 4945 states have call predecessors, (6980), 4889 states have call successors, (6980) [2022-01-10 06:13:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23618 states to 23618 states and 38760 transitions. [2022-01-10 06:13:15,540 INFO L78 Accepts]: Start accepts. Automaton has 23618 states and 38760 transitions. Word has length 192 [2022-01-10 06:13:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:15,540 INFO L470 AbstractCegarLoop]: Abstraction has 23618 states and 38760 transitions. [2022-01-10 06:13:15,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 6 states have call successors, (42), 5 states have call predecessors, (42), 7 states have return successors, (39), 5 states have call predecessors, (39), 6 states have call successors, (39) [2022-01-10 06:13:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 23618 states and 38760 transitions. [2022-01-10 06:13:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-10 06:13:15,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:15,546 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:13:15,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:15,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:15,761 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash 386382111, now seen corresponding path program 1 times [2022-01-10 06:13:15,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:15,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849997054] [2022-01-10 06:13:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:15,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:15,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:15,789 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:15,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:13:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:16,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:13:16,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-10 06:13:16,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:16,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:16,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849997054] [2022-01-10 06:13:16,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849997054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:16,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:16,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:13:16,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558453857] [2022-01-10 06:13:16,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:16,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:13:16,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:13:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:13:16,400 INFO L87 Difference]: Start difference. First operand 23618 states and 38760 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 06:13:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:18,148 INFO L93 Difference]: Finished difference Result 47338 states and 79151 transitions. [2022-01-10 06:13:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:13:18,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2022-01-10 06:13:18,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:18,297 INFO L225 Difference]: With dead ends: 47338 [2022-01-10 06:13:18,297 INFO L226 Difference]: Without dead ends: 23870 [2022-01-10 06:13:18,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:13:18,513 INFO L933 BasicCegarLoop]: 1034 mSDtfsCounter, 965 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:18,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 2623 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:13:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23870 states. [2022-01-10 06:13:19,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23870 to 23870. [2022-01-10 06:13:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23870 states, 17496 states have (on average 1.547153635116598) internal successors, (27069), 18391 states have internal predecessors, (27069), 4927 states have call successors, (4927), 1283 states have call predecessors, (4927), 1446 states have return successors, (6976), 4945 states have call predecessors, (6976), 4889 states have call successors, (6976) [2022-01-10 06:13:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23870 states to 23870 states and 38972 transitions. [2022-01-10 06:13:19,755 INFO L78 Accepts]: Start accepts. Automaton has 23870 states and 38972 transitions. Word has length 193 [2022-01-10 06:13:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:19,756 INFO L470 AbstractCegarLoop]: Abstraction has 23870 states and 38972 transitions. [2022-01-10 06:13:19,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-01-10 06:13:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 23870 states and 38972 transitions. [2022-01-10 06:13:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-10 06:13:19,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:19,764 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:13:19,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:19,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:19,978 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:19,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:19,979 INFO L85 PathProgramCache]: Analyzing trace with hash 186112509, now seen corresponding path program 1 times [2022-01-10 06:13:19,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:19,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554423653] [2022-01-10 06:13:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:19,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:19,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:19,981 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:19,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:13:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:20,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 06:13:20,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 06:13:20,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:13:21,315 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-01-10 06:13:21,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:21,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554423653] [2022-01-10 06:13:21,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554423653] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:13:21,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:13:21,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-01-10 06:13:21,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467999947] [2022-01-10 06:13:21,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:13:21,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:13:21,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:21,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:13:21,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:13:21,318 INFO L87 Difference]: Start difference. First operand 23870 states and 38972 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 14 states have internal predecessors, (190), 8 states have call successors, (47), 6 states have call predecessors, (47), 12 states have return successors, (46), 12 states have call predecessors, (46), 8 states have call successors, (46)