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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:34:01,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:34:01,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:34:01,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:34:01,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:34:01,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:34:01,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:34:01,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:34:01,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:34:01,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:34:01,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:34:01,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:34:01,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:34:01,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:34:01,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:34:01,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:34:01,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:34:01,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:34:01,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:34:01,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:34:01,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:34:01,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:34:01,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:34:01,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:34:01,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:34:01,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:34:01,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:34:01,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:34:01,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:34:01,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:34:01,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:34:01,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:34:01,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:34:01,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:34:01,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:34:01,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:34:01,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:34:01,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:34:01,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:34:01,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:34:01,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:34:01,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:34:01,845 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:34:01,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:34:01,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:34:01,851 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:34:01,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:34:01,852 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:34:01,852 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:34:01,852 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:34:01,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:34:01,853 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:34:01,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:34:01,854 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:34:01,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:34:01,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:34:01,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:34:01,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:34:01,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:34:01,858 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:34:01,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:34:01,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:34:01,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:34:01,859 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:34:01,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:34:01,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:34:01,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:34:01,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:34:01,861 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:34:01,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:34:01,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:34:01,862 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:34:01,916 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:34:01,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:34:01,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:34:01,939 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:34:01,940 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:34:01,940 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-09-10 02:34:02,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52bd9060/d69cc2e120e74d6ab1e8fe3f0f79371d/FLAG3a65000a6 [2019-09-10 02:34:02,586 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:34:02,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-09-10 02:34:02,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52bd9060/d69cc2e120e74d6ab1e8fe3f0f79371d/FLAG3a65000a6 [2019-09-10 02:34:02,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e52bd9060/d69cc2e120e74d6ab1e8fe3f0f79371d [2019-09-10 02:34:02,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:34:02,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:34:02,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:34:02,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:34:02,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:34:02,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:34:02" (1/1) ... [2019-09-10 02:34:02,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5d63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:02, skipping insertion in model container [2019-09-10 02:34:02,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:34:02" (1/1) ... [2019-09-10 02:34:02,788 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:34:02,888 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:34:03,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:34:03,797 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:34:03,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:34:04,007 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:34:04,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04 WrapperNode [2019-09-10 02:34:04,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:34:04,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:34:04,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:34:04,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:34:04,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04" (1/1) ... [2019-09-10 02:34:04,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04" (1/1) ... [2019-09-10 02:34:04,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04" (1/1) ... [2019-09-10 02:34:04,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04" (1/1) ... [2019-09-10 02:34:04,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04" (1/1) ... [2019-09-10 02:34:04,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04" (1/1) ... [2019-09-10 02:34:04,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04" (1/1) ... [2019-09-10 02:34:04,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:34:04,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:34:04,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:34:04,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:34:04,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04" (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 [2019-09-10 02:34:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:34:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:34:04,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:34:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-09-10 02:34:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-09-10 02:34:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-09-10 02:34:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-09-10 02:34:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-09-10 02:34:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-09-10 02:34:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-09-10 02:34:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-09-10 02:34:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:34:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-09-10 02:34:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-09-10 02:34:04,295 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-09-10 02:34:04,295 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:34:04,295 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-09-10 02:34:04,295 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:34:04,295 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:34:04,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:34:04,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-09-10 02:34:04,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-09-10 02:34:04,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-09-10 02:34:04,297 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-09-10 02:34:04,298 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-09-10 02:34:04,298 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-09-10 02:34:04,299 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-09-10 02:34:04,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-09-10 02:34:04,299 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-09-10 02:34:04,299 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-09-10 02:34:04,299 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-09-10 02:34:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-09-10 02:34:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-09-10 02:34:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-09-10 02:34:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-09-10 02:34:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-09-10 02:34:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-09-10 02:34:04,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-09-10 02:34:04,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-09-10 02:34:04,301 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-09-10 02:34:04,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-09-10 02:34:04,301 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-09-10 02:34:04,302 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-09-10 02:34:04,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-09-10 02:34:04,303 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-09-10 02:34:04,303 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-09-10 02:34:04,303 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-09-10 02:34:04,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-09-10 02:34:04,304 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-09-10 02:34:04,304 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:34:04,304 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-09-10 02:34:04,304 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-09-10 02:34:04,304 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-09-10 02:34:04,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-09-10 02:34:04,305 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-09-10 02:34:04,305 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-09-10 02:34:04,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-09-10 02:34:04,305 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-09-10 02:34:04,305 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-09-10 02:34:04,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-09-10 02:34:04,306 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:34:04,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:34:04,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-09-10 02:34:04,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:34:04,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:34:04,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:34:04,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:34:04,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:34:04,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:34:04,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:34:04,308 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:34:04,309 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:34:04,309 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:34:04,310 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:34:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:34:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:34:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 02:34:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-09-10 02:34:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-09-10 02:34:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-09-10 02:34:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-09-10 02:34:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-09-10 02:34:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-09-10 02:34:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-09-10 02:34:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-09-10 02:34:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-09-10 02:34:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:34:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-09-10 02:34:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-09-10 02:34:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-09-10 02:34:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:34:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-09-10 02:34:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-09-10 02:34:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-09-10 02:34:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-09-10 02:34:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-09-10 02:34:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:34:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-09-10 02:34:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:34:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:34:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:34:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:34:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:34:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:34:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:34:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-09-10 02:34:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-09-10 02:34:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-09-10 02:34:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-09-10 02:34:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-09-10 02:34:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:34:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-09-10 02:34:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-09-10 02:34:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-09-10 02:34:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-09-10 02:34:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-09-10 02:34:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-09-10 02:34:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-09-10 02:34:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-09-10 02:34:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-09-10 02:34:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-09-10 02:34:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-09-10 02:34:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-09-10 02:34:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-09-10 02:34:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-09-10 02:34:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-09-10 02:34:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-09-10 02:34:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-09-10 02:34:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-09-10 02:34:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-09-10 02:34:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-09-10 02:34:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-09-10 02:34:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-09-10 02:34:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-09-10 02:34:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-09-10 02:34:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-09-10 02:34:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-09-10 02:34:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:34:04,330 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-09-10 02:34:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:34:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-09-10 02:34:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-09-10 02:34:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:34:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:34:04,342 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:34:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:34:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:34:04,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:34:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:34:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:34:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:34:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:34:04,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:34:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:34:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:34:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:34:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:34:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:34:04,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:34:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:34:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:34:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:34:04,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:34:06,711 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:34:06,712 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-10 02:34:06,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:34:06 BoogieIcfgContainer [2019-09-10 02:34:06,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:34:06,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:34:06,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:34:06,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:34:06,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:34:02" (1/3) ... [2019-09-10 02:34:06,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32362ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:34:06, skipping insertion in model container [2019-09-10 02:34:06,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:34:04" (2/3) ... [2019-09-10 02:34:06,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32362ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:34:06, skipping insertion in model container [2019-09-10 02:34:06,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:34:06" (3/3) ... [2019-09-10 02:34:06,724 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2019-09-10 02:34:06,737 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:34:06,747 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:34:06,764 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:34:06,797 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:34:06,798 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:34:06,798 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:34:06,798 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:34:06,798 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:34:06,798 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:34:06,798 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:34:06,798 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:34:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states. [2019-09-10 02:34:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-09-10 02:34:06,873 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:06,875 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:06,877 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:06,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:06,884 INFO L82 PathProgramCache]: Analyzing trace with hash -713058684, now seen corresponding path program 1 times [2019-09-10 02:34:06,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:06,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:06,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:06,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:06,942 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:07,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:07,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:34:07,661 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:07,667 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:34:07,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:34:07,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:34:07,685 INFO L87 Difference]: Start difference. First operand 793 states. Second operand 7 states. [2019-09-10 02:34:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:07,905 INFO L93 Difference]: Finished difference Result 652 states and 1036 transitions. [2019-09-10 02:34:07,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:34:07,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-09-10 02:34:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:07,956 INFO L225 Difference]: With dead ends: 652 [2019-09-10 02:34:07,956 INFO L226 Difference]: Without dead ends: 641 [2019-09-10 02:34:07,958 INFO L628 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 [2019-09-10 02:34:07,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2019-09-10 02:34:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 639. [2019-09-10 02:34:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-09-10 02:34:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1019 transitions. [2019-09-10 02:34:08,092 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1019 transitions. Word has length 132 [2019-09-10 02:34:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:08,093 INFO L475 AbstractCegarLoop]: Abstraction has 639 states and 1019 transitions. [2019-09-10 02:34:08,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:34:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1019 transitions. [2019-09-10 02:34:08,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-09-10 02:34:08,103 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:08,104 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:08,104 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:08,105 INFO L82 PathProgramCache]: Analyzing trace with hash 2033776308, now seen corresponding path program 1 times [2019-09-10 02:34:08,105 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:08,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:08,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:08,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:08,106 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:08,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:08,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:34:08,351 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:08,354 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:34:08,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:34:08,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:34:08,355 INFO L87 Difference]: Start difference. First operand 639 states and 1019 transitions. Second operand 4 states. [2019-09-10 02:34:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:08,405 INFO L93 Difference]: Finished difference Result 637 states and 1014 transitions. [2019-09-10 02:34:08,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:34:08,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2019-09-10 02:34:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:08,412 INFO L225 Difference]: With dead ends: 637 [2019-09-10 02:34:08,412 INFO L226 Difference]: Without dead ends: 621 [2019-09-10 02:34:08,413 INFO L628 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 [2019-09-10 02:34:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-09-10 02:34:08,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-09-10 02:34:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-09-10 02:34:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 986 transitions. [2019-09-10 02:34:08,450 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 986 transitions. Word has length 133 [2019-09-10 02:34:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:08,455 INFO L475 AbstractCegarLoop]: Abstraction has 621 states and 986 transitions. [2019-09-10 02:34:08,455 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:34:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 986 transitions. [2019-09-10 02:34:08,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-09-10 02:34:08,463 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:08,463 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:08,465 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1652657134, now seen corresponding path program 1 times [2019-09-10 02:34:08,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:08,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:08,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:08,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:08,472 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:08,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:08,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:34:08,808 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:08,809 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:34:08,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:34:08,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:34:08,810 INFO L87 Difference]: Start difference. First operand 621 states and 986 transitions. Second operand 7 states. [2019-09-10 02:34:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:08,917 INFO L93 Difference]: Finished difference Result 624 states and 989 transitions. [2019-09-10 02:34:08,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:34:08,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-09-10 02:34:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:08,925 INFO L225 Difference]: With dead ends: 624 [2019-09-10 02:34:08,926 INFO L226 Difference]: Without dead ends: 615 [2019-09-10 02:34:08,926 INFO L628 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 [2019-09-10 02:34:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-09-10 02:34:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-09-10 02:34:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-09-10 02:34:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 973 transitions. [2019-09-10 02:34:08,969 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 973 transitions. Word has length 133 [2019-09-10 02:34:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:08,970 INFO L475 AbstractCegarLoop]: Abstraction has 615 states and 973 transitions. [2019-09-10 02:34:08,970 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:34:08,970 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 973 transitions. [2019-09-10 02:34:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-10 02:34:08,976 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:08,976 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:08,976 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:08,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:08,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1402803232, now seen corresponding path program 1 times [2019-09-10 02:34:08,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:08,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:08,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:08,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:08,978 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:09,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:09,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:34:09,159 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:09,160 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:34:09,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:34:09,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:34:09,161 INFO L87 Difference]: Start difference. First operand 615 states and 973 transitions. Second operand 7 states. [2019-09-10 02:34:09,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:09,250 INFO L93 Difference]: Finished difference Result 618 states and 976 transitions. [2019-09-10 02:34:09,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:34:09,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-09-10 02:34:09,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:09,260 INFO L225 Difference]: With dead ends: 618 [2019-09-10 02:34:09,260 INFO L226 Difference]: Without dead ends: 609 [2019-09-10 02:34:09,260 INFO L628 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 [2019-09-10 02:34:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-09-10 02:34:09,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2019-09-10 02:34:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2019-09-10 02:34:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 960 transitions. [2019-09-10 02:34:09,295 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 960 transitions. Word has length 134 [2019-09-10 02:34:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:09,296 INFO L475 AbstractCegarLoop]: Abstraction has 609 states and 960 transitions. [2019-09-10 02:34:09,296 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:34:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 960 transitions. [2019-09-10 02:34:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-09-10 02:34:09,302 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:09,302 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:09,303 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:09,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:09,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1674666634, now seen corresponding path program 1 times [2019-09-10 02:34:09,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:09,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:09,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:09,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:09,305 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:09,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:09,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:34:09,610 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:09,610 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:34:09,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:34:09,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:34:09,611 INFO L87 Difference]: Start difference. First operand 609 states and 960 transitions. Second operand 7 states. [2019-09-10 02:34:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:09,703 INFO L93 Difference]: Finished difference Result 612 states and 963 transitions. [2019-09-10 02:34:09,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:34:09,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-09-10 02:34:09,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:09,716 INFO L225 Difference]: With dead ends: 612 [2019-09-10 02:34:09,716 INFO L226 Difference]: Without dead ends: 603 [2019-09-10 02:34:09,717 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:34:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-09-10 02:34:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-09-10 02:34:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-09-10 02:34:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 947 transitions. [2019-09-10 02:34:09,739 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 947 transitions. Word has length 135 [2019-09-10 02:34:09,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:09,739 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 947 transitions. [2019-09-10 02:34:09,739 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:34:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 947 transitions. [2019-09-10 02:34:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-09-10 02:34:09,746 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:09,746 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:09,746 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:09,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:09,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1533378921, now seen corresponding path program 1 times [2019-09-10 02:34:09,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:09,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:09,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:09,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:09,749 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:09,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:09,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:09,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:34:09,928 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:09,928 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:34:09,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:34:09,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:34:09,929 INFO L87 Difference]: Start difference. First operand 603 states and 947 transitions. Second operand 7 states. [2019-09-10 02:34:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:10,005 INFO L93 Difference]: Finished difference Result 606 states and 950 transitions. [2019-09-10 02:34:10,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:34:10,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-09-10 02:34:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:10,012 INFO L225 Difference]: With dead ends: 606 [2019-09-10 02:34:10,014 INFO L226 Difference]: Without dead ends: 603 [2019-09-10 02:34:10,014 INFO L628 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 [2019-09-10 02:34:10,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-09-10 02:34:10,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-09-10 02:34:10,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-09-10 02:34:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 946 transitions. [2019-09-10 02:34:10,039 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 946 transitions. Word has length 135 [2019-09-10 02:34:10,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:10,040 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 946 transitions. [2019-09-10 02:34:10,040 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:34:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 946 transitions. [2019-09-10 02:34:10,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-10 02:34:10,044 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:10,044 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:10,044 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:10,046 INFO L82 PathProgramCache]: Analyzing trace with hash 939897276, now seen corresponding path program 1 times [2019-09-10 02:34:10,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:10,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:10,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:10,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:10,050 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:10,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:10,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:34:10,204 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:10,205 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:34:10,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:34:10,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:34:10,206 INFO L87 Difference]: Start difference. First operand 603 states and 946 transitions. Second operand 5 states. [2019-09-10 02:34:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:10,324 INFO L93 Difference]: Finished difference Result 605 states and 947 transitions. [2019-09-10 02:34:10,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:34:10,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2019-09-10 02:34:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:10,330 INFO L225 Difference]: With dead ends: 605 [2019-09-10 02:34:10,330 INFO L226 Difference]: Without dead ends: 603 [2019-09-10 02:34:10,331 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:34:10,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-09-10 02:34:10,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-09-10 02:34:10,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-09-10 02:34:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 945 transitions. [2019-09-10 02:34:10,354 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 945 transitions. Word has length 136 [2019-09-10 02:34:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:10,355 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 945 transitions. [2019-09-10 02:34:10,355 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:34:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 945 transitions. [2019-09-10 02:34:10,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-10 02:34:10,359 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:10,360 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:10,360 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:10,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:10,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1962554060, now seen corresponding path program 1 times [2019-09-10 02:34:10,360 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:10,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:10,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:10,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:10,362 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:10,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:10,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:34:10,520 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:10,520 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:34:10,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:34:10,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:34:10,521 INFO L87 Difference]: Start difference. First operand 603 states and 945 transitions. Second operand 5 states. [2019-09-10 02:34:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:10,580 INFO L93 Difference]: Finished difference Result 605 states and 946 transitions. [2019-09-10 02:34:10,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:34:10,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2019-09-10 02:34:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:10,586 INFO L225 Difference]: With dead ends: 605 [2019-09-10 02:34:10,586 INFO L226 Difference]: Without dead ends: 603 [2019-09-10 02:34:10,587 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:34:10,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-09-10 02:34:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-09-10 02:34:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-09-10 02:34:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 944 transitions. [2019-09-10 02:34:10,607 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 944 transitions. Word has length 137 [2019-09-10 02:34:10,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:10,608 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 944 transitions. [2019-09-10 02:34:10,608 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:34:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 944 transitions. [2019-09-10 02:34:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-10 02:34:10,612 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:10,612 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:10,613 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:10,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:10,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1062439167, now seen corresponding path program 1 times [2019-09-10 02:34:10,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:10,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:10,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:10,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:10,614 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:10,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:10,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:34:10,740 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:10,740 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:34:10,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:34:10,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:34:10,741 INFO L87 Difference]: Start difference. First operand 603 states and 944 transitions. Second operand 5 states. [2019-09-10 02:34:10,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:10,799 INFO L93 Difference]: Finished difference Result 605 states and 945 transitions. [2019-09-10 02:34:10,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:34:10,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-09-10 02:34:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:10,804 INFO L225 Difference]: With dead ends: 605 [2019-09-10 02:34:10,804 INFO L226 Difference]: Without dead ends: 603 [2019-09-10 02:34:10,805 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:34:10,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-09-10 02:34:10,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-09-10 02:34:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-09-10 02:34:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 943 transitions. [2019-09-10 02:34:10,826 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 943 transitions. Word has length 138 [2019-09-10 02:34:10,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:10,827 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 943 transitions. [2019-09-10 02:34:10,827 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:34:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 943 transitions. [2019-09-10 02:34:10,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-10 02:34:10,831 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:10,832 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:10,832 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:10,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1753111833, now seen corresponding path program 1 times [2019-09-10 02:34:10,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:10,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:10,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:10,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:10,834 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 02:34:10,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:34:10,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:34:10,963 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:10,964 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:34:10,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:34:10,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:34:10,965 INFO L87 Difference]: Start difference. First operand 603 states and 943 transitions. Second operand 5 states. [2019-09-10 02:34:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:11,021 INFO L93 Difference]: Finished difference Result 605 states and 944 transitions. [2019-09-10 02:34:11,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:34:11,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-09-10 02:34:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:11,026 INFO L225 Difference]: With dead ends: 605 [2019-09-10 02:34:11,027 INFO L226 Difference]: Without dead ends: 603 [2019-09-10 02:34:11,027 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:34:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-09-10 02:34:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-09-10 02:34:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-09-10 02:34:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 942 transitions. [2019-09-10 02:34:11,052 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 942 transitions. Word has length 139 [2019-09-10 02:34:11,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:11,052 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 942 transitions. [2019-09-10 02:34:11,053 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:34:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 942 transitions. [2019-09-10 02:34:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-10 02:34:11,057 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:34:11,057 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 02:34:11,058 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:34:11,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:11,058 INFO L82 PathProgramCache]: Analyzing trace with hash -477327290, now seen corresponding path program 1 times [2019-09-10 02:34:11,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:34:11,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:11,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:34:11,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:34:11,061 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:34:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:34:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 02:34:11,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:34:11,297 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:34:11,298 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2019-09-10 02:34:11,303 INFO L207 CegarAbsIntRunner]: [60], [61], [62], [63], [140], [144], [147], [343], [346], [364], [393], [394], [396], [408], [410], [411], [460], [462], [464], [540], [543], [640], [643], [648], [651], [717], [722], [789], [790], [791], [793], [822], [825], [827], [829], [833], [834], [870], [906], [942], [978], [981], [984], [1017], [1018], [1019], [1070], [1075], [1080], [1085], [1090], [1093], [1097], [1282], [1285], [1307], [1308], [1321], [1324], [1330], [1334], [1376], [1379], [1397], [1447], [1448], [1534], [1537], [1539], [1542], [1568], [1570], [1572], [1575], [1588], [1602], [1616], [1630], [1644], [1718], [1896], [1985], [2152], [2155], [2314], [2508], [2509], [2510], [2511], [2512], [2513], [2514], [2515], [2516], [2554], [2555], [2560], [2561], [2562], [2563], [2564], [2565], [2566], [2567], [2568], [2569], [2570], [2598], [2599], [2600], [2601], [2630], [2631], [2632], [2633], [2644], [2662], [2663], [2664], [2665], [2666], [2667], [2670], [2671], [2672], [2678], [2722], [2723], [2724], [2730], [2731], [2732], [2733], [2786], [2787], [2788] [2019-09-10 02:34:11,401 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:34:11,402 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:34:11,542 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:34:11,544 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 147 root evaluator evaluations with a maximum evaluation depth of 0. Performed 147 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 254 variables. [2019-09-10 02:34:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:34:11,550 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:34:11,645 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:34:11,645 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:34:11,655 INFO L420 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2019-09-10 02:34:11,655 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:34:11,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:34:11,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-10 02:34:11,657 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:34:11,658 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:34:11,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:34:11,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:34:11,659 INFO L87 Difference]: Start difference. First operand 603 states and 942 transitions. Second operand 2 states. [2019-09-10 02:34:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:34:11,660 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:34:11,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:34:11,660 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 140 [2019-09-10 02:34:11,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:34:11,661 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:34:11,661 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:34:11,662 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:34:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:34:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:34:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:34:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:34:11,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 140 [2019-09-10 02:34:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:34:11,663 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:34:11,663 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:34:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:34:11,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:34:11,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:34:11 BoogieIcfgContainer [2019-09-10 02:34:11,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:34:11,673 INFO L168 Benchmark]: Toolchain (without parser) took 8902.62 ms. Allocated memory was 136.8 MB in the beginning and 370.7 MB in the end (delta: 233.8 MB). Free memory was 89.6 MB in the beginning and 231.8 MB in the end (delta: -142.2 MB). Peak memory consumption was 91.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:34:11,674 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 136.8 MB. Free memory was 111.3 MB in the beginning and 111.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:34:11,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1237.35 ms. Allocated memory was 136.8 MB in the beginning and 205.0 MB in the end (delta: 68.2 MB). Free memory was 89.4 MB in the beginning and 144.4 MB in the end (delta: -55.0 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:34:11,677 INFO L168 Benchmark]: Boogie Preprocessor took 178.86 ms. Allocated memory is still 205.0 MB. Free memory was 144.4 MB in the beginning and 135.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:34:11,683 INFO L168 Benchmark]: RCFGBuilder took 2527.21 ms. Allocated memory was 205.0 MB in the beginning and 256.4 MB in the end (delta: 51.4 MB). Free memory was 135.0 MB in the beginning and 135.8 MB in the end (delta: -811.4 kB). Peak memory consumption was 92.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:34:11,684 INFO L168 Benchmark]: TraceAbstraction took 4954.63 ms. Allocated memory was 256.4 MB in the beginning and 370.7 MB in the end (delta: 114.3 MB). Free memory was 135.8 MB in the beginning and 231.8 MB in the end (delta: -96.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:34:11,695 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 136.8 MB. Free memory was 111.3 MB in the beginning and 111.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1237.35 ms. Allocated memory was 136.8 MB in the beginning and 205.0 MB in the end (delta: 68.2 MB). Free memory was 89.4 MB in the beginning and 144.4 MB in the end (delta: -55.0 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 178.86 ms. Allocated memory is still 205.0 MB. Free memory was 144.4 MB in the beginning and 135.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2527.21 ms. Allocated memory was 205.0 MB in the beginning and 256.4 MB in the end (delta: 51.4 MB). Free memory was 135.0 MB in the beginning and 135.8 MB in the end (delta: -811.4 kB). Peak memory consumption was 92.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4954.63 ms. Allocated memory was 256.4 MB in the beginning and 370.7 MB in the end (delta: 114.3 MB). Free memory was 135.8 MB in the beginning and 231.8 MB in the end (delta: -96.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2999]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 74 procedures, 918 locations, 1 error locations. SAFE Result, 4.8s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9575 SDtfs, 375 SDslu, 37022 SDs, 0 SdLazy, 470 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=793occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 2.1654676258992804 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1492 NumberOfCodeBlocks, 1492 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1481 ConstructedInterpolants, 0 QuantifiedInterpolants, 235044 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 64/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...