/usr/bin/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_spec2_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:42:33,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:42:33,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:42:33,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:42:33,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:42:33,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:42:33,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:42:33,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:42:33,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:42:33,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:42:33,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:42:33,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:42:33,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:42:33,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:42:33,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:42:33,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:42:33,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:42:33,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:42:33,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:42:33,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:42:33,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:42:33,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:42:33,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:42:33,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:42:33,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:42:33,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:42:33,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:42:33,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:42:33,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:42:33,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:42:33,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:42:33,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:42:33,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:42:33,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:42:33,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:42:33,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:42:33,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:42:33,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:42:33,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:42:33,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:42:33,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:42:33,292 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 [2019-11-07 00:42:33,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:42:33,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:42:33,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:42:33,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:42:33,309 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:42:33,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:42:33,309 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:42:33,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:42:33,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:42:33,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:42:33,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:42:33,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:42:33,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:42:33,310 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:42:33,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:42:33,311 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:42:33,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:42:33,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:42:33,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:42:33,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:42:33,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:42:33,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:42:33,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:42:33,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:42:33,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:42:33,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:42:33,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:42:33,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:42:33,314 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 [2019-11-07 00:42:33,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:42:33,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:42:33,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:42:33,612 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:42:33,613 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:42:33,613 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-11-07 00:42:33,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ce4d0913/5f5a039648d445518b51e0d96a7b52fd/FLAG7f499c013 [2019-11-07 00:42:34,303 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:42:34,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-11-07 00:42:34,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ce4d0913/5f5a039648d445518b51e0d96a7b52fd/FLAG7f499c013 [2019-11-07 00:42:34,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ce4d0913/5f5a039648d445518b51e0d96a7b52fd [2019-11-07 00:42:34,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:42:34,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:42:34,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:42:34,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:42:34,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:42:34,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:34" (1/1) ... [2019-11-07 00:42:34,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5173bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:34, skipping insertion in model container [2019-11-07 00:42:34,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:34" (1/1) ... [2019-11-07 00:42:34,543 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:42:34,628 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:42:35,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:42:35,396 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:42:35,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:42:35,636 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:42:35,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35 WrapperNode [2019-11-07 00:42:35,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:42:35,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:42:35,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:42:35,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:42:35,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35" (1/1) ... [2019-11-07 00:42:35,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35" (1/1) ... [2019-11-07 00:42:35,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35" (1/1) ... [2019-11-07 00:42:35,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35" (1/1) ... [2019-11-07 00:42:35,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35" (1/1) ... [2019-11-07 00:42:35,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35" (1/1) ... [2019-11-07 00:42:35,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35" (1/1) ... [2019-11-07 00:42:35,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:42:35,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:42:35,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:42:35,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:42:35,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35" (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 [2019-11-07 00:42:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:42:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:42:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:42:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:42:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:42:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:42:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:42:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:42:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:42:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 00:42:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:42:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:42:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:42:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:42:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:42:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:42:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:42:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:42:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:42:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:42:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 00:42:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:42:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:42:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:42:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 00:42:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:42:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:42:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:42:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-07 00:42:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:42:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-07 00:42:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:42:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:42:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 00:42:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 00:42:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:42:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:42:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:42:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:42:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:42:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:42:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:42:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:42:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:42:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:42:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:42:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:42:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:42:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:42:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:42:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:42:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:42:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:42:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:42:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:42:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:42:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:42:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:42:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:42:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:42:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:42:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:42:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:42:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:42:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:42:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:42:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:42:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:42:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:42:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:42:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:42:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:42:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:42:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:42:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:42:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:42:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:42:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:42:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:42:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:42:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:42:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:42:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:42:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:42:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:42:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:42:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:42:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:42:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:42:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:42:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:42:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:42:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:42:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:42:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:42:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:42:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:42:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:42:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:42:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:42:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:42:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:42:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:42:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:42:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 00:42:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 00:42:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:42:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:42:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 00:42:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:42:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:42:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:42:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:42:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:42:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:42:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 00:42:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:42:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:42:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 00:42:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:42:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:42:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:42:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-07 00:42:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:42:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-07 00:42:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:42:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:42:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:42:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:42:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:42:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:42:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:42:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:42:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:42:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:42:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:42:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:42:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:42:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:42:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:42:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:42:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:42:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:42:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:42:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:42:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:42:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:42:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:42:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:42:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:42:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:42:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:42:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:42:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:42:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:42:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:42:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:42:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:42:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:42:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:42:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:42:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:42:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:42:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:42:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:42:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:42:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:42:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:42:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:42:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:42:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:42:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:42:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:42:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:42:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:42:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:42:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:42:38,459 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:42:38,460 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:42:38,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:42:38 BoogieIcfgContainer [2019-11-07 00:42:38,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:42:38,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:42:38,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:42:38,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:42:38,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:42:34" (1/3) ... [2019-11-07 00:42:38,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f1f992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:42:38, skipping insertion in model container [2019-11-07 00:42:38,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:35" (2/3) ... [2019-11-07 00:42:38,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f1f992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:42:38, skipping insertion in model container [2019-11-07 00:42:38,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:42:38" (3/3) ... [2019-11-07 00:42:38,472 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2019-11-07 00:42:38,483 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:42:38,493 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:42:38,505 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:42:38,548 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:42:38,549 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:42:38,549 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:42:38,549 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:42:38,549 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:42:38,549 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:42:38,549 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:42:38,550 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:42:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states. [2019-11-07 00:42:38,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-07 00:42:38,614 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:38,615 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:38,619 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:38,625 INFO L82 PathProgramCache]: Analyzing trace with hash -247911758, now seen corresponding path program 1 times [2019-11-07 00:42:38,636 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:38,637 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234790960] [2019-11-07 00:42:38,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:39,285 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234790960] [2019-11-07 00:42:39,286 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:39,287 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:39,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327269346] [2019-11-07 00:42:39,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:39,297 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:39,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:39,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:39,316 INFO L87 Difference]: Start difference. First operand 802 states. Second operand 4 states. [2019-11-07 00:42:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:39,522 INFO L93 Difference]: Finished difference Result 1253 states and 2015 transitions. [2019-11-07 00:42:39,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:39,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2019-11-07 00:42:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:39,560 INFO L225 Difference]: With dead ends: 1253 [2019-11-07 00:42:39,561 INFO L226 Difference]: Without dead ends: 635 [2019-11-07 00:42:39,574 INFO L630 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 [2019-11-07 00:42:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-11-07 00:42:39,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-11-07 00:42:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-07 00:42:39,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1009 transitions. [2019-11-07 00:42:39,686 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1009 transitions. Word has length 85 [2019-11-07 00:42:39,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:39,687 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1009 transitions. [2019-11-07 00:42:39,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1009 transitions. [2019-11-07 00:42:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-07 00:42:39,693 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:39,693 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:39,694 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:39,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1599117105, now seen corresponding path program 1 times [2019-11-07 00:42:39,694 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:39,695 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002099774] [2019-11-07 00:42:39,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:39,858 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002099774] [2019-11-07 00:42:39,858 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:39,858 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:39,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008483325] [2019-11-07 00:42:39,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:39,861 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:39,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:39,862 INFO L87 Difference]: Start difference. First operand 635 states and 1009 transitions. Second operand 4 states. [2019-11-07 00:42:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:39,945 INFO L93 Difference]: Finished difference Result 1233 states and 1976 transitions. [2019-11-07 00:42:39,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:39,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-11-07 00:42:39,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:39,956 INFO L225 Difference]: With dead ends: 1233 [2019-11-07 00:42:39,959 INFO L226 Difference]: Without dead ends: 635 [2019-11-07 00:42:39,963 INFO L630 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 [2019-11-07 00:42:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-11-07 00:42:40,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-11-07 00:42:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-07 00:42:40,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1008 transitions. [2019-11-07 00:42:40,021 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1008 transitions. Word has length 88 [2019-11-07 00:42:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:40,029 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1008 transitions. [2019-11-07 00:42:40,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:40,029 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1008 transitions. [2019-11-07 00:42:40,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-07 00:42:40,038 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:40,038 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:40,039 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:40,042 INFO L82 PathProgramCache]: Analyzing trace with hash 246537377, now seen corresponding path program 1 times [2019-11-07 00:42:40,042 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:40,043 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129132900] [2019-11-07 00:42:40,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:40,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129132900] [2019-11-07 00:42:40,296 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:40,296 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:40,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821941404] [2019-11-07 00:42:40,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:40,299 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:40,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:40,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:40,299 INFO L87 Difference]: Start difference. First operand 635 states and 1008 transitions. Second operand 4 states. [2019-11-07 00:42:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:40,374 INFO L93 Difference]: Finished difference Result 1233 states and 1975 transitions. [2019-11-07 00:42:40,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:40,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-11-07 00:42:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:40,383 INFO L225 Difference]: With dead ends: 1233 [2019-11-07 00:42:40,384 INFO L226 Difference]: Without dead ends: 635 [2019-11-07 00:42:40,387 INFO L630 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 [2019-11-07 00:42:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-11-07 00:42:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-11-07 00:42:40,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-07 00:42:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1007 transitions. [2019-11-07 00:42:40,432 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1007 transitions. Word has length 89 [2019-11-07 00:42:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:40,432 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1007 transitions. [2019-11-07 00:42:40,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1007 transitions. [2019-11-07 00:42:40,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-07 00:42:40,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:40,435 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:40,436 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:40,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1708600971, now seen corresponding path program 1 times [2019-11-07 00:42:40,436 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:40,436 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816237996] [2019-11-07 00:42:40,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:40,589 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816237996] [2019-11-07 00:42:40,589 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:40,589 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:40,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193474985] [2019-11-07 00:42:40,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:40,591 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:40,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:40,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:40,591 INFO L87 Difference]: Start difference. First operand 635 states and 1007 transitions. Second operand 4 states. [2019-11-07 00:42:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:40,659 INFO L93 Difference]: Finished difference Result 1233 states and 1974 transitions. [2019-11-07 00:42:40,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:40,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-11-07 00:42:40,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:40,673 INFO L225 Difference]: With dead ends: 1233 [2019-11-07 00:42:40,673 INFO L226 Difference]: Without dead ends: 635 [2019-11-07 00:42:40,677 INFO L630 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 [2019-11-07 00:42:40,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-11-07 00:42:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-11-07 00:42:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-07 00:42:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1006 transitions. [2019-11-07 00:42:40,708 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1006 transitions. Word has length 90 [2019-11-07 00:42:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:40,709 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1006 transitions. [2019-11-07 00:42:40,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1006 transitions. [2019-11-07 00:42:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-07 00:42:40,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:40,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:40,712 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash -130718371, now seen corresponding path program 1 times [2019-11-07 00:42:40,713 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:40,714 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411211135] [2019-11-07 00:42:40,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:40,848 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411211135] [2019-11-07 00:42:40,848 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:40,848 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:40,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325858935] [2019-11-07 00:42:40,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:40,849 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:40,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:40,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:40,850 INFO L87 Difference]: Start difference. First operand 635 states and 1006 transitions. Second operand 4 states. [2019-11-07 00:42:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:40,907 INFO L93 Difference]: Finished difference Result 1233 states and 1973 transitions. [2019-11-07 00:42:40,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:40,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-11-07 00:42:40,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:40,912 INFO L225 Difference]: With dead ends: 1233 [2019-11-07 00:42:40,912 INFO L226 Difference]: Without dead ends: 635 [2019-11-07 00:42:40,915 INFO L630 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 [2019-11-07 00:42:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-11-07 00:42:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-11-07 00:42:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-07 00:42:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1005 transitions. [2019-11-07 00:42:40,938 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1005 transitions. Word has length 91 [2019-11-07 00:42:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:40,938 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1005 transitions. [2019-11-07 00:42:40,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:40,939 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1005 transitions. [2019-11-07 00:42:40,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:42:40,940 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:40,941 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:40,941 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:40,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:40,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1233693625, now seen corresponding path program 1 times [2019-11-07 00:42:40,942 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:40,942 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882139465] [2019-11-07 00:42:40,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:41,203 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882139465] [2019-11-07 00:42:41,203 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:41,203 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:42:41,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41276147] [2019-11-07 00:42:41,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:42:41,204 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:41,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:42:41,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:42:41,205 INFO L87 Difference]: Start difference. First operand 635 states and 1005 transitions. Second operand 10 states. [2019-11-07 00:42:41,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:41,388 INFO L93 Difference]: Finished difference Result 1191 states and 1893 transitions. [2019-11-07 00:42:41,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:42:41,389 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-11-07 00:42:41,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:41,394 INFO L225 Difference]: With dead ends: 1191 [2019-11-07 00:42:41,394 INFO L226 Difference]: Without dead ends: 644 [2019-11-07 00:42:41,397 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:42:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-11-07 00:42:41,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2019-11-07 00:42:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-07 00:42:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1014 transitions. [2019-11-07 00:42:41,428 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1014 transitions. Word has length 92 [2019-11-07 00:42:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:41,429 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1014 transitions. [2019-11-07 00:42:41,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:42:41,429 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1014 transitions. [2019-11-07 00:42:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:42:41,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:41,432 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:41,432 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1213356250, now seen corresponding path program 1 times [2019-11-07 00:42:41,433 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:41,433 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906893965] [2019-11-07 00:42:41,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:41,528 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906893965] [2019-11-07 00:42:41,528 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:41,528 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:41,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869768235] [2019-11-07 00:42:41,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:41,529 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:41,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:41,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:41,529 INFO L87 Difference]: Start difference. First operand 642 states and 1014 transitions. Second operand 4 states. [2019-11-07 00:42:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:41,580 INFO L93 Difference]: Finished difference Result 1239 states and 1979 transitions. [2019-11-07 00:42:41,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:41,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-11-07 00:42:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:41,585 INFO L225 Difference]: With dead ends: 1239 [2019-11-07 00:42:41,586 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:42:41,589 INFO L630 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 [2019-11-07 00:42:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:42:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-11-07 00:42:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:42:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 991 transitions. [2019-11-07 00:42:41,613 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 991 transitions. Word has length 92 [2019-11-07 00:42:41,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:41,613 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 991 transitions. [2019-11-07 00:42:41,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 991 transitions. [2019-11-07 00:42:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 00:42:41,615 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:41,615 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:41,616 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash -753982501, now seen corresponding path program 1 times [2019-11-07 00:42:41,616 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:41,616 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139896094] [2019-11-07 00:42:41,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:41,727 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139896094] [2019-11-07 00:42:41,727 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:41,727 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:41,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545763544] [2019-11-07 00:42:41,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:41,728 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:41,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:41,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:41,729 INFO L87 Difference]: Start difference. First operand 629 states and 991 transitions. Second operand 6 states. [2019-11-07 00:42:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:42,353 INFO L93 Difference]: Finished difference Result 1179 states and 1871 transitions. [2019-11-07 00:42:42,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:42,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-11-07 00:42:42,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:42,363 INFO L225 Difference]: With dead ends: 1179 [2019-11-07 00:42:42,367 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:42:42,375 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:42:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-11-07 00:42:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:42:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 987 transitions. [2019-11-07 00:42:42,433 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 987 transitions. Word has length 93 [2019-11-07 00:42:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:42,433 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 987 transitions. [2019-11-07 00:42:42,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 987 transitions. [2019-11-07 00:42:42,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:42:42,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:42,436 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:42,436 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:42,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:42,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1319589162, now seen corresponding path program 1 times [2019-11-07 00:42:42,436 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:42,437 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500621142] [2019-11-07 00:42:42,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:42,556 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500621142] [2019-11-07 00:42:42,556 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:42,556 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:42,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92388562] [2019-11-07 00:42:42,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:42,557 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:42,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:42,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:42,558 INFO L87 Difference]: Start difference. First operand 629 states and 987 transitions. Second operand 6 states. [2019-11-07 00:42:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:42,756 INFO L93 Difference]: Finished difference Result 1179 states and 1867 transitions. [2019-11-07 00:42:42,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:42,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-11-07 00:42:42,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:42,763 INFO L225 Difference]: With dead ends: 1179 [2019-11-07 00:42:42,763 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:42:42,766 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:42,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:42:42,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-11-07 00:42:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:42:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 983 transitions. [2019-11-07 00:42:42,790 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 983 transitions. Word has length 94 [2019-11-07 00:42:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:42,791 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 983 transitions. [2019-11-07 00:42:42,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 983 transitions. [2019-11-07 00:42:42,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:42:42,793 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:42,794 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:42,794 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:42,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1137004480, now seen corresponding path program 1 times [2019-11-07 00:42:42,795 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:42,795 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570961906] [2019-11-07 00:42:42,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:42,930 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570961906] [2019-11-07 00:42:42,930 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:42,931 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:42,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961841601] [2019-11-07 00:42:42,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:42,932 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:42,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:42,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:42,932 INFO L87 Difference]: Start difference. First operand 629 states and 983 transitions. Second operand 6 states. [2019-11-07 00:42:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:43,118 INFO L93 Difference]: Finished difference Result 1179 states and 1863 transitions. [2019-11-07 00:42:43,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:43,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-11-07 00:42:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:43,124 INFO L225 Difference]: With dead ends: 1179 [2019-11-07 00:42:43,124 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:42:43,132 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:42:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-11-07 00:42:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:42:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 979 transitions. [2019-11-07 00:42:43,156 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 979 transitions. Word has length 95 [2019-11-07 00:42:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:43,156 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 979 transitions. [2019-11-07 00:42:43,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 979 transitions. [2019-11-07 00:42:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:42:43,160 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:43,160 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:43,160 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:43,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:43,161 INFO L82 PathProgramCache]: Analyzing trace with hash -2110108608, now seen corresponding path program 1 times [2019-11-07 00:42:43,161 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:43,161 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184541133] [2019-11-07 00:42:43,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:43,335 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184541133] [2019-11-07 00:42:43,335 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:43,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:42:43,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588051953] [2019-11-07 00:42:43,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:42:43,336 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:43,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:42:43,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:42:43,337 INFO L87 Difference]: Start difference. First operand 629 states and 979 transitions. Second operand 7 states. [2019-11-07 00:42:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:43,426 INFO L93 Difference]: Finished difference Result 1179 states and 1859 transitions. [2019-11-07 00:42:43,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:42:43,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-11-07 00:42:43,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:43,434 INFO L225 Difference]: With dead ends: 1179 [2019-11-07 00:42:43,435 INFO L226 Difference]: Without dead ends: 608 [2019-11-07 00:42:43,438 INFO L630 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 [2019-11-07 00:42:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-11-07 00:42:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-11-07 00:42:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-11-07 00:42:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 945 transitions. [2019-11-07 00:42:43,457 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 945 transitions. Word has length 95 [2019-11-07 00:42:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:43,458 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 945 transitions. [2019-11-07 00:42:43,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:42:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 945 transitions. [2019-11-07 00:42:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:42:43,460 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:43,460 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:43,460 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:43,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:43,461 INFO L82 PathProgramCache]: Analyzing trace with hash -266950161, now seen corresponding path program 1 times [2019-11-07 00:42:43,463 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:43,463 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572635065] [2019-11-07 00:42:43,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:43,588 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572635065] [2019-11-07 00:42:43,588 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:43,588 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:43,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853975780] [2019-11-07 00:42:43,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:43,589 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:43,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:43,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:43,590 INFO L87 Difference]: Start difference. First operand 608 states and 945 transitions. Second operand 6 states. [2019-11-07 00:42:43,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:43,710 INFO L93 Difference]: Finished difference Result 1158 states and 1825 transitions. [2019-11-07 00:42:43,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:43,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-11-07 00:42:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:43,717 INFO L225 Difference]: With dead ends: 1158 [2019-11-07 00:42:43,718 INFO L226 Difference]: Without dead ends: 608 [2019-11-07 00:42:43,722 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:43,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-11-07 00:42:43,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-11-07 00:42:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-11-07 00:42:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 944 transitions. [2019-11-07 00:42:43,750 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 944 transitions. Word has length 96 [2019-11-07 00:42:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:43,751 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 944 transitions. [2019-11-07 00:42:43,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 944 transitions. [2019-11-07 00:42:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:42:43,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:43,754 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:43,755 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:43,755 INFO L82 PathProgramCache]: Analyzing trace with hash -878667867, now seen corresponding path program 1 times [2019-11-07 00:42:43,756 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:43,756 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027024543] [2019-11-07 00:42:43,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:43,928 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027024543] [2019-11-07 00:42:43,928 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:43,928 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:43,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660485136] [2019-11-07 00:42:43,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:43,929 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:43,930 INFO L87 Difference]: Start difference. First operand 608 states and 944 transitions. Second operand 6 states. [2019-11-07 00:42:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:44,037 INFO L93 Difference]: Finished difference Result 1158 states and 1824 transitions. [2019-11-07 00:42:44,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:44,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-11-07 00:42:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:44,043 INFO L225 Difference]: With dead ends: 1158 [2019-11-07 00:42:44,043 INFO L226 Difference]: Without dead ends: 608 [2019-11-07 00:42:44,046 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:44,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-11-07 00:42:44,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-11-07 00:42:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-11-07 00:42:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 943 transitions. [2019-11-07 00:42:44,067 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 943 transitions. Word has length 97 [2019-11-07 00:42:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:44,069 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 943 transitions. [2019-11-07 00:42:44,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:44,069 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 943 transitions. [2019-11-07 00:42:44,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 00:42:44,070 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:44,070 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:44,071 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:44,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:44,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1594122932, now seen corresponding path program 1 times [2019-11-07 00:42:44,071 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:44,071 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808222230] [2019-11-07 00:42:44,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:44,257 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808222230] [2019-11-07 00:42:44,257 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:44,258 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:42:44,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111028971] [2019-11-07 00:42:44,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:42:44,259 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:44,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:42:44,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:42:44,260 INFO L87 Difference]: Start difference. First operand 608 states and 943 transitions. Second operand 12 states. [2019-11-07 00:42:44,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:44,471 INFO L93 Difference]: Finished difference Result 1159 states and 1823 transitions. [2019-11-07 00:42:44,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:42:44,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-11-07 00:42:44,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:44,476 INFO L225 Difference]: With dead ends: 1159 [2019-11-07 00:42:44,476 INFO L226 Difference]: Without dead ends: 608 [2019-11-07 00:42:44,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:42:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-11-07 00:42:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-11-07 00:42:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-11-07 00:42:44,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 942 transitions. [2019-11-07 00:42:44,505 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 942 transitions. Word has length 98 [2019-11-07 00:42:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:44,505 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 942 transitions. [2019-11-07 00:42:44,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:42:44,505 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 942 transitions. [2019-11-07 00:42:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 00:42:44,507 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:44,507 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:44,507 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:44,507 INFO L82 PathProgramCache]: Analyzing trace with hash -679219796, now seen corresponding path program 1 times [2019-11-07 00:42:44,508 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:44,508 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210778288] [2019-11-07 00:42:44,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:44,679 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210778288] [2019-11-07 00:42:44,679 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:44,680 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:44,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816362934] [2019-11-07 00:42:44,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:44,680 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:44,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:44,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:44,681 INFO L87 Difference]: Start difference. First operand 608 states and 942 transitions. Second operand 6 states. [2019-11-07 00:42:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:48,280 INFO L93 Difference]: Finished difference Result 1788 states and 2856 transitions. [2019-11-07 00:42:48,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:48,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-11-07 00:42:48,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:48,292 INFO L225 Difference]: With dead ends: 1788 [2019-11-07 00:42:48,292 INFO L226 Difference]: Without dead ends: 1246 [2019-11-07 00:42:48,296 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2019-11-07 00:42:48,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1119. [2019-11-07 00:42:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2019-11-07 00:42:48,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1781 transitions. [2019-11-07 00:42:48,351 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1781 transitions. Word has length 99 [2019-11-07 00:42:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:48,352 INFO L462 AbstractCegarLoop]: Abstraction has 1119 states and 1781 transitions. [2019-11-07 00:42:48,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1781 transitions. [2019-11-07 00:42:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-07 00:42:48,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:48,357 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:48,357 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:48,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:48,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1954757833, now seen corresponding path program 1 times [2019-11-07 00:42:48,358 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:48,358 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170894510] [2019-11-07 00:42:48,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 00:42:48,560 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170894510] [2019-11-07 00:42:48,561 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:48,561 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:42:48,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354025420] [2019-11-07 00:42:48,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:42:48,562 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:48,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:42:48,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:42:48,562 INFO L87 Difference]: Start difference. First operand 1119 states and 1781 transitions. Second operand 12 states. [2019-11-07 00:43:00,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:00,106 INFO L93 Difference]: Finished difference Result 3618 states and 5778 transitions. [2019-11-07 00:43:00,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:43:00,107 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2019-11-07 00:43:00,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:00,128 INFO L225 Difference]: With dead ends: 3618 [2019-11-07 00:43:00,128 INFO L226 Difference]: Without dead ends: 2565 [2019-11-07 00:43:00,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:43:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2019-11-07 00:43:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2507. [2019-11-07 00:43:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2507 states. [2019-11-07 00:43:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3962 transitions. [2019-11-07 00:43:00,269 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3962 transitions. Word has length 157 [2019-11-07 00:43:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:00,270 INFO L462 AbstractCegarLoop]: Abstraction has 2507 states and 3962 transitions. [2019-11-07 00:43:00,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:43:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3962 transitions. [2019-11-07 00:43:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-07 00:43:00,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:00,275 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:00,275 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:00,276 INFO L82 PathProgramCache]: Analyzing trace with hash -909350594, now seen corresponding path program 1 times [2019-11-07 00:43:00,276 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:00,276 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994782899] [2019-11-07 00:43:00,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:00,461 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994782899] [2019-11-07 00:43:00,461 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578514775] [2019-11-07 00:43:00,461 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 [2019-11-07 00:43:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:01,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 00:43:01,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:01,165 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:02,131 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:43:02,131 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-11-07 00:43:02,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968487432] [2019-11-07 00:43:02,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:02,132 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:02,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:02,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:43:02,133 INFO L87 Difference]: Start difference. First operand 2507 states and 3962 transitions. Second operand 5 states. [2019-11-07 00:43:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:03,271 INFO L93 Difference]: Finished difference Result 5012 states and 8131 transitions. [2019-11-07 00:43:03,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:03,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-11-07 00:43:03,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:03,292 INFO L225 Difference]: With dead ends: 5012 [2019-11-07 00:43:03,293 INFO L226 Difference]: Without dead ends: 2571 [2019-11-07 00:43:03,305 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 302 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:43:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2019-11-07 00:43:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2571. [2019-11-07 00:43:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2571 states. [2019-11-07 00:43:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4064 transitions. [2019-11-07 00:43:03,421 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4064 transitions. Word has length 158 [2019-11-07 00:43:03,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:03,422 INFO L462 AbstractCegarLoop]: Abstraction has 2571 states and 4064 transitions. [2019-11-07 00:43:03,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:03,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4064 transitions. [2019-11-07 00:43:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-07 00:43:03,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:03,427 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:03,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:03,628 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:03,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:03,629 INFO L82 PathProgramCache]: Analyzing trace with hash -922827090, now seen corresponding path program 1 times [2019-11-07 00:43:03,629 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:03,629 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540920148] [2019-11-07 00:43:03,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:03,771 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540920148] [2019-11-07 00:43:03,771 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562030456] [2019-11-07 00:43:03,771 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 [2019-11-07 00:43:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:04,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 00:43:04,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:04,445 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:05,380 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:43:05,380 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-11-07 00:43:05,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353931995] [2019-11-07 00:43:05,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:05,382 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:05,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:05,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:43:05,382 INFO L87 Difference]: Start difference. First operand 2571 states and 4064 transitions. Second operand 5 states. [2019-11-07 00:43:06,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:06,313 INFO L93 Difference]: Finished difference Result 5140 states and 8317 transitions. [2019-11-07 00:43:06,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:06,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2019-11-07 00:43:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:06,334 INFO L225 Difference]: With dead ends: 5140 [2019-11-07 00:43:06,334 INFO L226 Difference]: Without dead ends: 2635 [2019-11-07 00:43:06,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 306 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:43:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2019-11-07 00:43:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2635. [2019-11-07 00:43:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2635 states. [2019-11-07 00:43:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 4166 transitions. [2019-11-07 00:43:06,461 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 4166 transitions. Word has length 160 [2019-11-07 00:43:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:06,462 INFO L462 AbstractCegarLoop]: Abstraction has 2635 states and 4166 transitions. [2019-11-07 00:43:06,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 4166 transitions. [2019-11-07 00:43:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 00:43:06,469 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:06,470 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:06,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:06,678 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1774849534, now seen corresponding path program 1 times [2019-11-07 00:43:06,679 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:06,679 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584016546] [2019-11-07 00:43:06,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:06,870 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584016546] [2019-11-07 00:43:06,871 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350382931] [2019-11-07 00:43:06,871 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 [2019-11-07 00:43:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:07,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 00:43:07,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:07,620 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:08,488 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:43:08,488 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-11-07 00:43:08,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556181344] [2019-11-07 00:43:08,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:08,489 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:08,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:08,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:43:08,489 INFO L87 Difference]: Start difference. First operand 2635 states and 4166 transitions. Second operand 5 states. [2019-11-07 00:43:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:09,461 INFO L93 Difference]: Finished difference Result 5268 states and 8503 transitions. [2019-11-07 00:43:09,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:43:09,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2019-11-07 00:43:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:09,480 INFO L225 Difference]: With dead ends: 5268 [2019-11-07 00:43:09,480 INFO L226 Difference]: Without dead ends: 2699 [2019-11-07 00:43:09,493 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 310 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:43:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2019-11-07 00:43:09,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2699. [2019-11-07 00:43:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2699 states. [2019-11-07 00:43:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 4268 transitions. [2019-11-07 00:43:09,606 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 4268 transitions. Word has length 162 [2019-11-07 00:43:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:09,608 INFO L462 AbstractCegarLoop]: Abstraction has 2699 states and 4268 transitions. [2019-11-07 00:43:09,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 4268 transitions. [2019-11-07 00:43:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-07 00:43:09,612 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:09,612 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:09,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:09,820 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:09,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:09,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1813252378, now seen corresponding path program 1 times [2019-11-07 00:43:09,821 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:09,821 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629080952] [2019-11-07 00:43:09,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:43:10,011 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629080952] [2019-11-07 00:43:10,011 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301988642] [2019-11-07 00:43:10,011 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