java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:10:33,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:10:33,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:10:33,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:10:33,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:10:33,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:10:33,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:10:33,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:10:33,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:10:33,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:10:33,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:10:33,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:10:33,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:10:33,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:10:33,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:10:33,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:10:33,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:10:33,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:10:33,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:10:33,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:10:33,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:10:33,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:10:33,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:10:33,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:10:33,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:10:33,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:10:33,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:10:33,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:10:33,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:10:33,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:10:33,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:10:33,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:10:33,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:10:33,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:10:33,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:10:33,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:10:33,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:10:33,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:10:33,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:10:33,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:10:33,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:10:33,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:10:33,883 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:10:33,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:10:33,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:10:33,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:10:33,885 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:10:33,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:10:33,886 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:10:33,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:10:33,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:10:33,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:10:33,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:10:33,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:10:33,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:10:33,887 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:10:33,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:10:33,887 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:10:33,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:10:33,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:10:33,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:10:33,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:10:33,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:10:33,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:33,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:10:33,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:10:33,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:10:33,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:10:33,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:10:33,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:10:33,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:10:34,174 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:10:34,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:10:34,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:10:34,198 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:10:34,199 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:10:34,199 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product17.cil.c [2019-10-15 01:10:34,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87a2d174/b47d9a77f99f431e87a8acf8a4f4fddb/FLAG21a1da35b [2019-10-15 01:10:34,975 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:10:34,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product17.cil.c [2019-10-15 01:10:35,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87a2d174/b47d9a77f99f431e87a8acf8a4f4fddb/FLAG21a1da35b [2019-10-15 01:10:35,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87a2d174/b47d9a77f99f431e87a8acf8a4f4fddb [2019-10-15 01:10:35,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:10:35,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:10:35,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:35,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:10:35,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:10:35,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:35" (1/1) ... [2019-10-15 01:10:35,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac73568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:35, skipping insertion in model container [2019-10-15 01:10:35,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:35" (1/1) ... [2019-10-15 01:10:35,209 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:10:35,300 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:10:36,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:36,075 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:10:36,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:36,327 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:10:36,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36 WrapperNode [2019-10-15 01:10:36,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:36,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:10:36,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:10:36,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:10:36,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36" (1/1) ... [2019-10-15 01:10:36,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36" (1/1) ... [2019-10-15 01:10:36,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36" (1/1) ... [2019-10-15 01:10:36,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36" (1/1) ... [2019-10-15 01:10:36,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36" (1/1) ... [2019-10-15 01:10:36,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36" (1/1) ... [2019-10-15 01:10:36,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36" (1/1) ... [2019-10-15 01:10:36,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:10:36,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:10:36,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:10:36,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:10:36,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:36,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:10:36,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:10:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:10:36,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:10:36,620 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:10:36,620 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:10:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:10:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:10:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:10:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:10:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:10:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:10:36,623 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:10:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:10:36,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:36,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:36,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:36,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:10:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:10:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:10:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:10:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:10:36,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:10:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:10:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:10:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:10:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:10:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:10:36,629 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:10:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:10:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:10:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:10:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:10:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:10:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:10:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:10:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:10:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:10:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:10:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:10:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:10:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:10:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:10:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:10:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:10:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:10:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:10:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:10:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:10:36,633 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:10:36,634 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:10:36,634 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:10:36,634 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:10:36,634 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:10:36,634 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:10:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:10:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:10:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:10:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:10:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:10:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:10:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:10:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:10:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:10:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:10:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:10:36,637 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:10:36,638 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:10:36,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:10:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:10:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:10:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:10:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:10:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:10:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:10:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:10:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:10:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:10:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:10:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 01:10:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 01:10:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:10:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:10:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:10:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:10:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:10:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:10:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:10:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:10:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:10:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:10:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:10:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:10:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:10:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:10:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:10:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:10:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:10:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:10:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:10:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:10:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:10:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:10:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:10:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:10:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:10:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:10:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:10:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:10:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:10:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:10:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:10:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:10:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:10:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:10:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:10:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:10:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:10:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:10:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:10:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:10:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:10:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:10:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:10:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:10:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:10:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:10:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:10:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:10:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:10:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:10:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:10:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:10:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:10:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:10:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:10:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:10:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:10:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:10:36,663 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:10:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:10:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:10:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:10:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:10:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:10:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:10:36,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:10:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:10:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:10:36,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:10:38,959 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:10:38,960 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:10:38,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:38 BoogieIcfgContainer [2019-10-15 01:10:38,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:10:38,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:10:38,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:10:38,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:10:38,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:10:35" (1/3) ... [2019-10-15 01:10:38,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f28befb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:38, skipping insertion in model container [2019-10-15 01:10:38,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:36" (2/3) ... [2019-10-15 01:10:38,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f28befb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:38, skipping insertion in model container [2019-10-15 01:10:38,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:38" (3/3) ... [2019-10-15 01:10:38,976 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product17.cil.c [2019-10-15 01:10:38,987 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:10:38,999 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:10:39,013 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:10:39,064 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:10:39,064 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:10:39,064 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:10:39,064 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:10:39,064 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:10:39,065 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:10:39,065 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:10:39,065 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:10:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states. [2019-10-15 01:10:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 01:10:39,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:39,154 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:39,158 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash 766900618, now seen corresponding path program 1 times [2019-10-15 01:10:39,175 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:39,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430301525] [2019-10-15 01:10:39,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:39,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:39,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:39,883 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430301525] [2019-10-15 01:10:39,884 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:39,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:39,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205332124] [2019-10-15 01:10:39,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:39,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:39,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:39,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:39,908 INFO L87 Difference]: Start difference. First operand 762 states. Second operand 7 states. [2019-10-15 01:10:40,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:40,137 INFO L93 Difference]: Finished difference Result 1203 states and 1962 transitions. [2019-10-15 01:10:40,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:40,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-15 01:10:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:40,179 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:10:40,180 INFO L226 Difference]: Without dead ends: 610 [2019-10-15 01:10:40,193 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2019-10-15 01:10:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2019-10-15 01:10:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-15 01:10:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 976 transitions. [2019-10-15 01:10:40,329 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 976 transitions. Word has length 115 [2019-10-15 01:10:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:40,330 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 976 transitions. [2019-10-15 01:10:40,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 976 transitions. [2019-10-15 01:10:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-15 01:10:40,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:40,346 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:40,346 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:40,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2028873896, now seen corresponding path program 1 times [2019-10-15 01:10:40,347 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:40,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360961132] [2019-10-15 01:10:40,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:40,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:40,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:40,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360961132] [2019-10-15 01:10:40,537 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:40,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:40,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725194722] [2019-10-15 01:10:40,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:40,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:40,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:40,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:40,540 INFO L87 Difference]: Start difference. First operand 608 states and 976 transitions. Second operand 4 states. [2019-10-15 01:10:40,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:40,620 INFO L93 Difference]: Finished difference Result 1182 states and 1917 transitions. [2019-10-15 01:10:40,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:40,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-15 01:10:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:40,627 INFO L225 Difference]: With dead ends: 1182 [2019-10-15 01:10:40,627 INFO L226 Difference]: Without dead ends: 590 [2019-10-15 01:10:40,631 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-15 01:10:40,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2019-10-15 01:10:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-10-15 01:10:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 943 transitions. [2019-10-15 01:10:40,691 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 943 transitions. Word has length 116 [2019-10-15 01:10:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:40,693 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 943 transitions. [2019-10-15 01:10:40,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:40,693 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 943 transitions. [2019-10-15 01:10:40,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-15 01:10:40,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:40,705 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:40,705 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:40,706 INFO L82 PathProgramCache]: Analyzing trace with hash -597122142, now seen corresponding path program 1 times [2019-10-15 01:10:40,706 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:40,706 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202226847] [2019-10-15 01:10:40,706 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:40,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:40,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:41,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202226847] [2019-10-15 01:10:41,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:41,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:41,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090925899] [2019-10-15 01:10:41,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:41,024 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:41,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:41,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:41,025 INFO L87 Difference]: Start difference. First operand 590 states and 943 transitions. Second operand 7 states. [2019-10-15 01:10:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:41,156 INFO L93 Difference]: Finished difference Result 1151 states and 1859 transitions. [2019-10-15 01:10:41,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:41,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-15 01:10:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:41,163 INFO L225 Difference]: With dead ends: 1151 [2019-10-15 01:10:41,163 INFO L226 Difference]: Without dead ends: 584 [2019-10-15 01:10:41,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-15 01:10:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2019-10-15 01:10:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2019-10-15 01:10:41,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 930 transitions. [2019-10-15 01:10:41,204 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 930 transitions. Word has length 116 [2019-10-15 01:10:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:41,206 INFO L462 AbstractCegarLoop]: Abstraction has 584 states and 930 transitions. [2019-10-15 01:10:41,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 930 transitions. [2019-10-15 01:10:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 01:10:41,211 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:41,211 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:41,211 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:41,212 INFO L82 PathProgramCache]: Analyzing trace with hash 28817582, now seen corresponding path program 1 times [2019-10-15 01:10:41,212 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:41,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807498727] [2019-10-15 01:10:41,213 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:41,213 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:41,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:41,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807498727] [2019-10-15 01:10:41,374 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:41,374 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:41,375 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346108738] [2019-10-15 01:10:41,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:41,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:41,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:41,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:41,376 INFO L87 Difference]: Start difference. First operand 584 states and 930 transitions. Second operand 7 states. [2019-10-15 01:10:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:41,473 INFO L93 Difference]: Finished difference Result 1139 states and 1833 transitions. [2019-10-15 01:10:41,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:41,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-10-15 01:10:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:41,479 INFO L225 Difference]: With dead ends: 1139 [2019-10-15 01:10:41,479 INFO L226 Difference]: Without dead ends: 578 [2019-10-15 01:10:41,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2019-10-15 01:10:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2019-10-15 01:10:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2019-10-15 01:10:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 917 transitions. [2019-10-15 01:10:41,505 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 917 transitions. Word has length 117 [2019-10-15 01:10:41,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:41,506 INFO L462 AbstractCegarLoop]: Abstraction has 578 states and 917 transitions. [2019-10-15 01:10:41,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 917 transitions. [2019-10-15 01:10:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 01:10:41,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:41,510 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:41,510 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:41,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:41,510 INFO L82 PathProgramCache]: Analyzing trace with hash -2080915130, now seen corresponding path program 1 times [2019-10-15 01:10:41,511 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:41,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791676228] [2019-10-15 01:10:41,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:41,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:41,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:41,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791676228] [2019-10-15 01:10:41,674 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:41,674 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:41,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126725646] [2019-10-15 01:10:41,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:41,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:41,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:41,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:41,676 INFO L87 Difference]: Start difference. First operand 578 states and 917 transitions. Second operand 7 states. [2019-10-15 01:10:41,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:41,824 INFO L93 Difference]: Finished difference Result 1127 states and 1807 transitions. [2019-10-15 01:10:41,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:41,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-10-15 01:10:41,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:41,830 INFO L225 Difference]: With dead ends: 1127 [2019-10-15 01:10:41,830 INFO L226 Difference]: Without dead ends: 572 [2019-10-15 01:10:41,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-10-15 01:10:41,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2019-10-15 01:10:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-10-15 01:10:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 904 transitions. [2019-10-15 01:10:41,855 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 904 transitions. Word has length 118 [2019-10-15 01:10:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:41,855 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 904 transitions. [2019-10-15 01:10:41,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 904 transitions. [2019-10-15 01:10:41,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 01:10:41,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:41,859 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:41,859 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:41,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:41,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1033464967, now seen corresponding path program 1 times [2019-10-15 01:10:41,860 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:41,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266640041] [2019-10-15 01:10:41,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:41,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:41,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:42,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266640041] [2019-10-15 01:10:42,004 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:42,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:42,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073942628] [2019-10-15 01:10:42,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:42,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:42,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:42,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:42,006 INFO L87 Difference]: Start difference. First operand 572 states and 904 transitions. Second operand 7 states. [2019-10-15 01:10:42,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:42,142 INFO L93 Difference]: Finished difference Result 1115 states and 1781 transitions. [2019-10-15 01:10:42,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:42,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-10-15 01:10:42,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:42,149 INFO L225 Difference]: With dead ends: 1115 [2019-10-15 01:10:42,149 INFO L226 Difference]: Without dead ends: 572 [2019-10-15 01:10:42,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:42,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-10-15 01:10:42,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2019-10-15 01:10:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-10-15 01:10:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 903 transitions. [2019-10-15 01:10:42,181 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 903 transitions. Word has length 118 [2019-10-15 01:10:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:42,181 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 903 transitions. [2019-10-15 01:10:42,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 903 transitions. [2019-10-15 01:10:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 01:10:42,185 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:42,185 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:42,186 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:42,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1197819858, now seen corresponding path program 1 times [2019-10-15 01:10:42,186 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:42,187 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465557393] [2019-10-15 01:10:42,187 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,187 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:42,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465557393] [2019-10-15 01:10:42,374 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:42,374 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:42,375 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961029883] [2019-10-15 01:10:42,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:42,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:42,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:42,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:42,377 INFO L87 Difference]: Start difference. First operand 572 states and 903 transitions. Second operand 5 states. [2019-10-15 01:10:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:42,485 INFO L93 Difference]: Finished difference Result 1114 states and 1778 transitions. [2019-10-15 01:10:42,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:42,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-10-15 01:10:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:42,492 INFO L225 Difference]: With dead ends: 1114 [2019-10-15 01:10:42,493 INFO L226 Difference]: Without dead ends: 572 [2019-10-15 01:10:42,497 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-10-15 01:10:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2019-10-15 01:10:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-10-15 01:10:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 902 transitions. [2019-10-15 01:10:42,524 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 902 transitions. Word has length 119 [2019-10-15 01:10:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:42,525 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 902 transitions. [2019-10-15 01:10:42,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 902 transitions. [2019-10-15 01:10:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 01:10:42,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:42,531 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:42,531 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:42,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:42,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2117874534, now seen corresponding path program 1 times [2019-10-15 01:10:42,532 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:42,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182447629] [2019-10-15 01:10:42,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:42,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182447629] [2019-10-15 01:10:42,831 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:42,831 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:42,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567252292] [2019-10-15 01:10:42,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:42,833 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:42,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:42,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:42,834 INFO L87 Difference]: Start difference. First operand 572 states and 902 transitions. Second operand 5 states. [2019-10-15 01:10:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:42,934 INFO L93 Difference]: Finished difference Result 1114 states and 1776 transitions. [2019-10-15 01:10:42,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:42,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-10-15 01:10:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:42,941 INFO L225 Difference]: With dead ends: 1114 [2019-10-15 01:10:42,942 INFO L226 Difference]: Without dead ends: 572 [2019-10-15 01:10:42,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:42,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-10-15 01:10:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2019-10-15 01:10:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-10-15 01:10:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 901 transitions. [2019-10-15 01:10:42,971 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 901 transitions. Word has length 120 [2019-10-15 01:10:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:42,971 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 901 transitions. [2019-10-15 01:10:42,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:42,972 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 901 transitions. [2019-10-15 01:10:42,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 01:10:42,975 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:42,975 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:42,976 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:42,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1349008403, now seen corresponding path program 1 times [2019-10-15 01:10:42,976 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:42,976 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601692109] [2019-10-15 01:10:42,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:42,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:43,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601692109] [2019-10-15 01:10:43,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:43,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:43,112 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539147049] [2019-10-15 01:10:43,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:43,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:43,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:43,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:43,114 INFO L87 Difference]: Start difference. First operand 572 states and 901 transitions. Second operand 5 states. [2019-10-15 01:10:43,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:43,186 INFO L93 Difference]: Finished difference Result 1114 states and 1774 transitions. [2019-10-15 01:10:43,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:43,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-10-15 01:10:43,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:43,192 INFO L225 Difference]: With dead ends: 1114 [2019-10-15 01:10:43,192 INFO L226 Difference]: Without dead ends: 572 [2019-10-15 01:10:43,196 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:43,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-10-15 01:10:43,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2019-10-15 01:10:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-10-15 01:10:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 900 transitions. [2019-10-15 01:10:43,219 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 900 transitions. Word has length 121 [2019-10-15 01:10:43,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:43,220 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 900 transitions. [2019-10-15 01:10:43,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 900 transitions. [2019-10-15 01:10:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-15 01:10:43,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:43,224 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:43,224 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:43,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:43,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1487182357, now seen corresponding path program 1 times [2019-10-15 01:10:43,225 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:43,225 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215256812] [2019-10-15 01:10:43,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:43,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:43,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:43,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215256812] [2019-10-15 01:10:43,352 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:43,352 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:43,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756889250] [2019-10-15 01:10:43,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:43,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:43,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:43,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:43,354 INFO L87 Difference]: Start difference. First operand 572 states and 900 transitions. Second operand 5 states. [2019-10-15 01:10:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:43,427 INFO L93 Difference]: Finished difference Result 1114 states and 1772 transitions. [2019-10-15 01:10:43,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:43,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2019-10-15 01:10:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:43,435 INFO L225 Difference]: With dead ends: 1114 [2019-10-15 01:10:43,436 INFO L226 Difference]: Without dead ends: 572 [2019-10-15 01:10:43,441 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-10-15 01:10:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2019-10-15 01:10:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-10-15 01:10:43,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 899 transitions. [2019-10-15 01:10:43,471 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 899 transitions. Word has length 122 [2019-10-15 01:10:43,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:43,472 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 899 transitions. [2019-10-15 01:10:43,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 899 transitions. [2019-10-15 01:10:43,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 01:10:43,477 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:43,478 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:43,478 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:43,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1599417670, now seen corresponding path program 1 times [2019-10-15 01:10:43,479 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:43,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652422931] [2019-10-15 01:10:43,480 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:43,480 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:43,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:43,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652422931] [2019-10-15 01:10:43,861 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:43,862 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:10:43,862 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682277097] [2019-10-15 01:10:43,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:10:43,863 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:43,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:10:43,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:10:43,863 INFO L87 Difference]: Start difference. First operand 572 states and 899 transitions. Second operand 9 states. [2019-10-15 01:10:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:44,046 INFO L93 Difference]: Finished difference Result 1116 states and 1771 transitions. [2019-10-15 01:10:44,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:10:44,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2019-10-15 01:10:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:44,055 INFO L225 Difference]: With dead ends: 1116 [2019-10-15 01:10:44,055 INFO L226 Difference]: Without dead ends: 572 [2019-10-15 01:10:44,061 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:10:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-10-15 01:10:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2019-10-15 01:10:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-10-15 01:10:44,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 898 transitions. [2019-10-15 01:10:44,090 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 898 transitions. Word has length 123 [2019-10-15 01:10:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:44,090 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 898 transitions. [2019-10-15 01:10:44,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:10:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 898 transitions. [2019-10-15 01:10:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-15 01:10:44,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:44,096 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:44,097 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:44,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:44,097 INFO L82 PathProgramCache]: Analyzing trace with hash -309040120, now seen corresponding path program 1 times [2019-10-15 01:10:44,098 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:44,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452277486] [2019-10-15 01:10:44,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:44,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:44,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452277486] [2019-10-15 01:10:44,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084439923] [2019-10-15 01:10:44,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:44,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:45,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:45,165 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:45,295 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:45,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:45,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739173775] [2019-10-15 01:10:45,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:45,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:45,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:45,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:45,297 INFO L87 Difference]: Start difference. First operand 572 states and 898 transitions. Second operand 3 states. [2019-10-15 01:10:45,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:45,378 INFO L93 Difference]: Finished difference Result 1592 states and 2552 transitions. [2019-10-15 01:10:45,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:45,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-10-15 01:10:45,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:45,388 INFO L225 Difference]: With dead ends: 1592 [2019-10-15 01:10:45,388 INFO L226 Difference]: Without dead ends: 1054 [2019-10-15 01:10:45,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2019-10-15 01:10:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1041. [2019-10-15 01:10:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2019-10-15 01:10:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1657 transitions. [2019-10-15 01:10:45,456 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1657 transitions. Word has length 123 [2019-10-15 01:10:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:45,456 INFO L462 AbstractCegarLoop]: Abstraction has 1041 states and 1657 transitions. [2019-10-15 01:10:45,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1657 transitions. [2019-10-15 01:10:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-15 01:10:45,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:45,461 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:45,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:45,679 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:45,680 INFO L82 PathProgramCache]: Analyzing trace with hash 126585383, now seen corresponding path program 1 times [2019-10-15 01:10:45,681 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:45,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203030069] [2019-10-15 01:10:45,681 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,682 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:45,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:45,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203030069] [2019-10-15 01:10:45,852 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:45,853 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:45,853 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093804033] [2019-10-15 01:10:45,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:45,854 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:45,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:45,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:45,854 INFO L87 Difference]: Start difference. First operand 1041 states and 1657 transitions. Second operand 7 states. [2019-10-15 01:10:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:49,016 INFO L93 Difference]: Finished difference Result 3057 states and 4984 transitions. [2019-10-15 01:10:49,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:10:49,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2019-10-15 01:10:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:49,036 INFO L225 Difference]: With dead ends: 3057 [2019-10-15 01:10:49,037 INFO L226 Difference]: Without dead ends: 2050 [2019-10-15 01:10:49,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:10:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2019-10-15 01:10:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1984. [2019-10-15 01:10:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1984 states. [2019-10-15 01:10:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 3226 transitions. [2019-10-15 01:10:49,144 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 3226 transitions. Word has length 127 [2019-10-15 01:10:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:49,144 INFO L462 AbstractCegarLoop]: Abstraction has 1984 states and 3226 transitions. [2019-10-15 01:10:49,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 3226 transitions. [2019-10-15 01:10:49,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 01:10:49,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:49,149 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:49,150 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash 353455773, now seen corresponding path program 1 times [2019-10-15 01:10:49,150 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:49,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344012673] [2019-10-15 01:10:49,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:49,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:49,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:49,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344012673] [2019-10-15 01:10:49,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372911960] [2019-10-15 01:10:49,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:50,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:10:50,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:50,097 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:50,229 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:50,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:10:50,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124960147] [2019-10-15 01:10:50,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:50,233 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:50,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:50,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:50,234 INFO L87 Difference]: Start difference. First operand 1984 states and 3226 transitions. Second operand 3 states. [2019-10-15 01:10:50,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:50,376 INFO L93 Difference]: Finished difference Result 4884 states and 8028 transitions. [2019-10-15 01:10:50,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:50,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2019-10-15 01:10:50,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:50,402 INFO L225 Difference]: With dead ends: 4884 [2019-10-15 01:10:50,403 INFO L226 Difference]: Without dead ends: 2934 [2019-10-15 01:10:50,414 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2019-10-15 01:10:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2834. [2019-10-15 01:10:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2834 states. [2019-10-15 01:10:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 4634 transitions. [2019-10-15 01:10:50,575 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 4634 transitions. Word has length 124 [2019-10-15 01:10:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:50,578 INFO L462 AbstractCegarLoop]: Abstraction has 2834 states and 4634 transitions. [2019-10-15 01:10:50,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 4634 transitions. [2019-10-15 01:10:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-15 01:10:50,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:50,585 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:50,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:50,794 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:50,795 INFO L82 PathProgramCache]: Analyzing trace with hash 612328635, now seen corresponding path program 1 times [2019-10-15 01:10:50,796 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:50,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355076940] [2019-10-15 01:10:50,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,797 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:50,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:51,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355076940] [2019-10-15 01:10:51,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179830482] [2019-10-15 01:10:51,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:51,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:10:51,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:51,652 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:51,866 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:51,866 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [11] total 14 [2019-10-15 01:10:51,867 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823818988] [2019-10-15 01:10:51,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:51,867 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:51,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:51,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:10:51,868 INFO L87 Difference]: Start difference. First operand 2834 states and 4634 transitions. Second operand 5 states. [2019-10-15 01:10:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:54,140 INFO L93 Difference]: Finished difference Result 13026 states and 21545 transitions. [2019-10-15 01:10:54,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:10:54,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2019-10-15 01:10:54,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:54,255 INFO L225 Difference]: With dead ends: 13026 [2019-10-15 01:10:54,255 INFO L226 Difference]: Without dead ends: 10227 [2019-10-15 01:10:54,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:10:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10227 states. [2019-10-15 01:10:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10227 to 10107. [2019-10-15 01:10:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10107 states. [2019-10-15 01:10:54,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10107 states to 10107 states and 16392 transitions. [2019-10-15 01:10:54,801 INFO L78 Accepts]: Start accepts. Automaton has 10107 states and 16392 transitions. Word has length 127 [2019-10-15 01:10:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:54,801 INFO L462 AbstractCegarLoop]: Abstraction has 10107 states and 16392 transitions. [2019-10-15 01:10:54,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 10107 states and 16392 transitions. [2019-10-15 01:10:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 01:10:54,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:54,808 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:55,016 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:55,016 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:55,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1829505526, now seen corresponding path program 1 times [2019-10-15 01:10:55,018 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:55,018 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631844831] [2019-10-15 01:10:55,018 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:55,018 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:55,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:55,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631844831] [2019-10-15 01:10:55,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787854159] [2019-10-15 01:10:55,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:55,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 3021 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:10:55,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:55,825 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:55,922 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:55,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 11 [2019-10-15 01:10:55,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011331312] [2019-10-15 01:10:55,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:10:55,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:55,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:10:55,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:10:55,924 INFO L87 Difference]: Start difference. First operand 10107 states and 16392 transitions. Second operand 3 states. [2019-10-15 01:10:57,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:57,353 INFO L93 Difference]: Finished difference Result 28008 states and 45865 transitions. [2019-10-15 01:10:57,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:10:57,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2019-10-15 01:10:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:57,507 INFO L225 Difference]: With dead ends: 28008 [2019-10-15 01:10:57,508 INFO L226 Difference]: Without dead ends: 18020 [2019-10-15 01:10:57,569 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:10:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18020 states. [2019-10-15 01:10:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18020 to 17854. [2019-10-15 01:10:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17854 states. [2019-10-15 01:10:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17854 states to 17854 states and 28984 transitions. [2019-10-15 01:10:58,363 INFO L78 Accepts]: Start accepts. Automaton has 17854 states and 28984 transitions. Word has length 132 [2019-10-15 01:10:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:58,366 INFO L462 AbstractCegarLoop]: Abstraction has 17854 states and 28984 transitions. [2019-10-15 01:10:58,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:10:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 17854 states and 28984 transitions. [2019-10-15 01:10:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 01:10:58,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:58,372 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:58,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:58,580 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:58,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:58,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1185598092, now seen corresponding path program 1 times [2019-10-15 01:10:58,581 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:58,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922019568] [2019-10-15 01:10:58,582 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:58,582 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:58,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:10:58,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922019568] [2019-10-15 01:10:58,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317097782] [2019-10-15 01:10:58,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:59,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:10:59,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:10:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:59,550 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:59,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:10:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:59,791 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:10:59,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-15 01:10:59,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106539611] [2019-10-15 01:10:59,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:10:59,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:59,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:10:59,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:10:59,794 INFO L87 Difference]: Start difference. First operand 17854 states and 28984 transitions. Second operand 11 states. [2019-10-15 01:11:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:04,719 INFO L93 Difference]: Finished difference Result 44630 states and 73186 transitions. [2019-10-15 01:11:04,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 01:11:04,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 132 [2019-10-15 01:11:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:04,943 INFO L225 Difference]: With dead ends: 44630 [2019-10-15 01:11:04,944 INFO L226 Difference]: Without dead ends: 26810 [2019-10-15 01:11:05,031 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:11:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26810 states.