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_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:33:23,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:33:23,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:33:24,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:33:24,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:33:24,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:33:24,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:33:24,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:33:24,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:33:24,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:33:24,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:33:24,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:33:24,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:33:24,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:33:24,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:33:24,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:33:24,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:33:24,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:33:24,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:33:24,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:33:24,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:33:24,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:33:24,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:33:24,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:33:24,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:33:24,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:33:24,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:33:24,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:33:24,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:33:24,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:33:24,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:33:24,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:33:24,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:33:24,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:33:24,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:33:24,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:33:24,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:33:24,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:33:24,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:33:24,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:33:24,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:33:24,044 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 02:33:24,072 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:33:24,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:33:24,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:33:24,073 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:33:24,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:33:24,074 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:33:24,075 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:33:24,075 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:33:24,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:33:24,075 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:33:24,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:33:24,078 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:33:24,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:33:24,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:33:24,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:33:24,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:33:24,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:33:24,079 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:33:24,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:33:24,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:33:24,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:33:24,080 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:33:24,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:33:24,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:33:24,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:33:24,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:33:24,081 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:33:24,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:33:24,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:33:24,082 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:33:24,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:33:24,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:33:24,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:33:24,148 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:33:24,149 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:33:24,150 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-09-10 02:33:24,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43bbd1d8e/d970d8589d5944f4bb97acfd1f75baca/FLAG483e7c88f [2019-09-10 02:33:24,848 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:33:24,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product11.cil.c [2019-09-10 02:33:24,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43bbd1d8e/d970d8589d5944f4bb97acfd1f75baca/FLAG483e7c88f [2019-09-10 02:33:25,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43bbd1d8e/d970d8589d5944f4bb97acfd1f75baca [2019-09-10 02:33:25,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:33:25,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:33:25,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:33:25,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:33:25,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:33:25,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:33:25" (1/1) ... [2019-09-10 02:33:25,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eccc939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:25, skipping insertion in model container [2019-09-10 02:33:25,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:33:25" (1/1) ... [2019-09-10 02:33:25,061 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:33:25,141 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:33:25,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:33:25,916 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:33:26,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:33:26,205 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:33:26,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26 WrapperNode [2019-09-10 02:33:26,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:33:26,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:33:26,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:33:26,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:33:26,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26" (1/1) ... [2019-09-10 02:33:26,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26" (1/1) ... [2019-09-10 02:33:26,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26" (1/1) ... [2019-09-10 02:33:26,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26" (1/1) ... [2019-09-10 02:33:26,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26" (1/1) ... [2019-09-10 02:33:26,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26" (1/1) ... [2019-09-10 02:33:26,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26" (1/1) ... [2019-09-10 02:33:26,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:33:26,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:33:26,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:33:26,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:33:26,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26" (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 02:33:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:33:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:33:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:33:26,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:33:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:33:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:33:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:33:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:33:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:33:26,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:33:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-09-10 02:33:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-09-10 02:33:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-09-10 02:33:26,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-09-10 02:33:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-09-10 02:33:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:33:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-09-10 02:33:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-09-10 02:33:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-09-10 02:33:26,478 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-09-10 02:33:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-09-10 02:33:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-09-10 02:33:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-09-10 02:33:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-09-10 02:33:26,479 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-09-10 02:33:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:33:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-09-10 02:33:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-09-10 02:33:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-09-10 02:33:26,480 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:33:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-09-10 02:33:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:33:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:33:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:33:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:33:26,481 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-09-10 02:33:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-09-10 02:33:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-09-10 02:33:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-09-10 02:33:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-09-10 02:33:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-09-10 02:33:26,482 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-09-10 02:33:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-09-10 02:33:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-09-10 02:33:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-09-10 02:33:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-09-10 02:33:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-09-10 02:33:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-09-10 02:33:26,483 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-09-10 02:33:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-09-10 02:33:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-09-10 02:33:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-09-10 02:33:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-09-10 02:33:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-09-10 02:33:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-09-10 02:33:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-09-10 02:33:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-09-10 02:33:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-09-10 02:33:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:33:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-09-10 02:33:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-09-10 02:33:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-09-10 02:33:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-09-10 02:33:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-09-10 02:33:26,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-09-10 02:33:26,487 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-09-10 02:33:26,487 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-09-10 02:33:26,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-09-10 02:33:26,487 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-09-10 02:33:26,487 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-09-10 02:33:26,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-09-10 02:33:26,488 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:33:26,488 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:33:26,488 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:33:26,488 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:33:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:33:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:33:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:33:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:33:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:33:26,489 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:33:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:33:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:33:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:33:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:33:26,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:33:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:33:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:33:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:33:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:33:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:33:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:33:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:33:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:33:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:33:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-09-10 02:33:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-09-10 02:33:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:33:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-09-10 02:33:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-09-10 02:33:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-09-10 02:33:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-09-10 02:33:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-09-10 02:33:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-09-10 02:33:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-09-10 02:33:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-09-10 02:33:26,494 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-09-10 02:33:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-09-10 02:33:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-09-10 02:33:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-10 02:33:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-09-10 02:33:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 02:33:26,495 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-09-10 02:33:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-09-10 02:33:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-09-10 02:33:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-09-10 02:33:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-09-10 02:33:26,496 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-09-10 02:33:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-09-10 02:33:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-09-10 02:33:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-09-10 02:33:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:33:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-09-10 02:33:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-09-10 02:33:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-09-10 02:33:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:33:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-09-10 02:33:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:33:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:33:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:33:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:33:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:33:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:33:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:33:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:33:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-09-10 02:33:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-09-10 02:33:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-09-10 02:33:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-09-10 02:33:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-09-10 02:33:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-09-10 02:33:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-09-10 02:33:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-09-10 02:33:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-09-10 02:33:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-09-10 02:33:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-09-10 02:33:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-09-10 02:33:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-09-10 02:33:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-09-10 02:33:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-09-10 02:33:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-09-10 02:33:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-09-10 02:33:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-09-10 02:33:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-09-10 02:33:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-09-10 02:33:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-09-10 02:33:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-09-10 02:33:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-09-10 02:33:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-09-10 02:33:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-09-10 02:33:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-09-10 02:33:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:33:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:33:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:33:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:33:29,032 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:33:29,032 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-10 02:33:29,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:33:29 BoogieIcfgContainer [2019-09-10 02:33:29,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:33:29,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:33:29,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:33:29,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:33:29,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:33:25" (1/3) ... [2019-09-10 02:33:29,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e954d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:33:29, skipping insertion in model container [2019-09-10 02:33:29,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:33:26" (2/3) ... [2019-09-10 02:33:29,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e954d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:33:29, skipping insertion in model container [2019-09-10 02:33:29,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:33:29" (3/3) ... [2019-09-10 02:33:29,043 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2019-09-10 02:33:29,053 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:33:29,062 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:33:29,079 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:33:29,117 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:33:29,117 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:33:29,118 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:33:29,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:33:29,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:33:29,118 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:33:29,118 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:33:29,118 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:33:29,162 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-09-10 02:33:29,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-10 02:33:29,215 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:29,216 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:29,220 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:29,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1989495119, now seen corresponding path program 1 times [2019-09-10 02:33:29,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:29,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:29,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:29,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:29,278 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:29,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:29,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:33:29,875 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:29,881 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:33:29,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:33:29,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:33:29,899 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 7 states. [2019-09-10 02:33:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:30,105 INFO L93 Difference]: Finished difference Result 644 states and 1024 transitions. [2019-09-10 02:33:30,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:33:30,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-09-10 02:33:30,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:30,145 INFO L225 Difference]: With dead ends: 644 [2019-09-10 02:33:30,146 INFO L226 Difference]: Without dead ends: 633 [2019-09-10 02:33:30,151 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 02:33:30,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-09-10 02:33:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 631. [2019-09-10 02:33:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-09-10 02:33:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1007 transitions. [2019-09-10 02:33:30,275 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1007 transitions. Word has length 141 [2019-09-10 02:33:30,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:30,275 INFO L475 AbstractCegarLoop]: Abstraction has 631 states and 1007 transitions. [2019-09-10 02:33:30,275 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:33:30,276 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1007 transitions. [2019-09-10 02:33:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-09-10 02:33:30,283 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:30,283 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:30,284 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:30,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1567093572, now seen corresponding path program 1 times [2019-09-10 02:33:30,284 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:30,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:30,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:30,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:30,286 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:30,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:30,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:33:30,476 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:30,478 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:33:30,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:33:30,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:33:30,479 INFO L87 Difference]: Start difference. First operand 631 states and 1007 transitions. Second operand 4 states. [2019-09-10 02:33:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:30,536 INFO L93 Difference]: Finished difference Result 629 states and 1002 transitions. [2019-09-10 02:33:30,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:33:30,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-09-10 02:33:30,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:30,542 INFO L225 Difference]: With dead ends: 629 [2019-09-10 02:33:30,542 INFO L226 Difference]: Without dead ends: 613 [2019-09-10 02:33:30,543 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 02:33:30,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2019-09-10 02:33:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2019-09-10 02:33:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-09-10 02:33:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 974 transitions. [2019-09-10 02:33:30,591 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 974 transitions. Word has length 142 [2019-09-10 02:33:30,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:30,592 INFO L475 AbstractCegarLoop]: Abstraction has 613 states and 974 transitions. [2019-09-10 02:33:30,592 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:33:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 974 transitions. [2019-09-10 02:33:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-09-10 02:33:30,603 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:30,603 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:30,604 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:30,604 INFO L82 PathProgramCache]: Analyzing trace with hash 972664476, now seen corresponding path program 1 times [2019-09-10 02:33:30,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:30,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:30,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:30,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:30,608 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:30,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:30,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:33:30,927 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:30,931 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:33:30,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:33:30,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:33:30,932 INFO L87 Difference]: Start difference. First operand 613 states and 974 transitions. Second operand 7 states. [2019-09-10 02:33:31,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:31,048 INFO L93 Difference]: Finished difference Result 616 states and 977 transitions. [2019-09-10 02:33:31,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:33:31,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-09-10 02:33:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:31,056 INFO L225 Difference]: With dead ends: 616 [2019-09-10 02:33:31,057 INFO L226 Difference]: Without dead ends: 607 [2019-09-10 02:33:31,057 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 02:33:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2019-09-10 02:33:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2019-09-10 02:33:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-09-10 02:33:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 961 transitions. [2019-09-10 02:33:31,089 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 961 transitions. Word has length 142 [2019-09-10 02:33:31,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:31,090 INFO L475 AbstractCegarLoop]: Abstraction has 607 states and 961 transitions. [2019-09-10 02:33:31,091 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:33:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 961 transitions. [2019-09-10 02:33:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-10 02:33:31,097 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:31,097 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:31,098 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash 894552595, now seen corresponding path program 1 times [2019-09-10 02:33:31,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:31,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:31,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:31,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:31,101 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:31,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:31,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:33:31,288 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:31,289 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:33:31,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:33:31,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:33:31,290 INFO L87 Difference]: Start difference. First operand 607 states and 961 transitions. Second operand 7 states. [2019-09-10 02:33:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:31,384 INFO L93 Difference]: Finished difference Result 610 states and 964 transitions. [2019-09-10 02:33:31,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:33:31,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-09-10 02:33:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:31,390 INFO L225 Difference]: With dead ends: 610 [2019-09-10 02:33:31,390 INFO L226 Difference]: Without dead ends: 601 [2019-09-10 02:33:31,391 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 02:33:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2019-09-10 02:33:31,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2019-09-10 02:33:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2019-09-10 02:33:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 948 transitions. [2019-09-10 02:33:31,415 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 948 transitions. Word has length 143 [2019-09-10 02:33:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:31,415 INFO L475 AbstractCegarLoop]: Abstraction has 601 states and 948 transitions. [2019-09-10 02:33:31,415 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:33:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 948 transitions. [2019-09-10 02:33:31,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-10 02:33:31,420 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:31,420 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:31,421 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:31,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:31,421 INFO L82 PathProgramCache]: Analyzing trace with hash -148048736, now seen corresponding path program 1 times [2019-09-10 02:33:31,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:31,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:31,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:31,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:31,422 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:31,667 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:31,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:31,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:33:31,667 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:31,668 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:33:31,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:33:31,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:33:31,669 INFO L87 Difference]: Start difference. First operand 601 states and 948 transitions. Second operand 7 states. [2019-09-10 02:33:31,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:31,765 INFO L93 Difference]: Finished difference Result 604 states and 951 transitions. [2019-09-10 02:33:31,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:33:31,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-09-10 02:33:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:31,782 INFO L225 Difference]: With dead ends: 604 [2019-09-10 02:33:31,782 INFO L226 Difference]: Without dead ends: 595 [2019-09-10 02:33:31,783 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 02:33:31,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-09-10 02:33:31,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-09-10 02:33:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-09-10 02:33:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 935 transitions. [2019-09-10 02:33:31,808 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 935 transitions. Word has length 144 [2019-09-10 02:33:31,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:31,810 INFO L475 AbstractCegarLoop]: Abstraction has 595 states and 935 transitions. [2019-09-10 02:33:31,810 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:33:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 935 transitions. [2019-09-10 02:33:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-10 02:33:31,814 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:31,814 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:31,815 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:31,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1386995551, now seen corresponding path program 1 times [2019-09-10 02:33:31,815 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:31,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:31,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:31,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:31,819 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:31,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:31,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:33:31,973 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:31,973 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:33:31,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:33:31,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:33:31,974 INFO L87 Difference]: Start difference. First operand 595 states and 935 transitions. Second operand 7 states. [2019-09-10 02:33:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:32,052 INFO L93 Difference]: Finished difference Result 598 states and 938 transitions. [2019-09-10 02:33:32,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:33:32,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-09-10 02:33:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:32,071 INFO L225 Difference]: With dead ends: 598 [2019-09-10 02:33:32,071 INFO L226 Difference]: Without dead ends: 595 [2019-09-10 02:33:32,071 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 02:33:32,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-09-10 02:33:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-09-10 02:33:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-09-10 02:33:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 934 transitions. [2019-09-10 02:33:32,092 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 934 transitions. Word has length 144 [2019-09-10 02:33:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:32,093 INFO L475 AbstractCegarLoop]: Abstraction has 595 states and 934 transitions. [2019-09-10 02:33:32,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:33:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 934 transitions. [2019-09-10 02:33:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-09-10 02:33:32,096 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:32,097 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:32,097 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:32,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1025051945, now seen corresponding path program 1 times [2019-09-10 02:33:32,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:32,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:32,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:32,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:32,099 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:32,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:32,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:33:32,221 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:32,221 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:33:32,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:33:32,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:33:32,222 INFO L87 Difference]: Start difference. First operand 595 states and 934 transitions. Second operand 5 states. [2019-09-10 02:33:32,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:32,283 INFO L93 Difference]: Finished difference Result 597 states and 935 transitions. [2019-09-10 02:33:32,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:33:32,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-09-10 02:33:32,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:32,288 INFO L225 Difference]: With dead ends: 597 [2019-09-10 02:33:32,288 INFO L226 Difference]: Without dead ends: 595 [2019-09-10 02:33:32,288 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 02:33:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-09-10 02:33:32,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-09-10 02:33:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-09-10 02:33:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 933 transitions. [2019-09-10 02:33:32,309 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 933 transitions. Word has length 145 [2019-09-10 02:33:32,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:32,309 INFO L475 AbstractCegarLoop]: Abstraction has 595 states and 933 transitions. [2019-09-10 02:33:32,309 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:33:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 933 transitions. [2019-09-10 02:33:32,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-09-10 02:33:32,313 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:32,313 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:32,313 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:32,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:32,314 INFO L82 PathProgramCache]: Analyzing trace with hash 977022328, now seen corresponding path program 1 times [2019-09-10 02:33:32,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:32,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:32,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:32,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:32,315 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:32,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:32,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:33:32,488 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:32,489 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:33:32,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:33:32,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:33:32,490 INFO L87 Difference]: Start difference. First operand 595 states and 933 transitions. Second operand 5 states. [2019-09-10 02:33:32,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:32,573 INFO L93 Difference]: Finished difference Result 597 states and 934 transitions. [2019-09-10 02:33:32,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:33:32,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-09-10 02:33:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:32,581 INFO L225 Difference]: With dead ends: 597 [2019-09-10 02:33:32,581 INFO L226 Difference]: Without dead ends: 595 [2019-09-10 02:33:32,581 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 02:33:32,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-09-10 02:33:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-09-10 02:33:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-09-10 02:33:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 932 transitions. [2019-09-10 02:33:32,608 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 932 transitions. Word has length 146 [2019-09-10 02:33:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:32,609 INFO L475 AbstractCegarLoop]: Abstraction has 595 states and 932 transitions. [2019-09-10 02:33:32,609 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:33:32,609 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 932 transitions. [2019-09-10 02:33:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-09-10 02:33:32,615 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:32,615 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:32,615 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:32,616 INFO L82 PathProgramCache]: Analyzing trace with hash 269954642, now seen corresponding path program 1 times [2019-09-10 02:33:32,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:32,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:32,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:32,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:32,618 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:32,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:32,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:33:32,806 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:32,807 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:33:32,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:33:32,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:33:32,808 INFO L87 Difference]: Start difference. First operand 595 states and 932 transitions. Second operand 5 states. [2019-09-10 02:33:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:32,887 INFO L93 Difference]: Finished difference Result 597 states and 933 transitions. [2019-09-10 02:33:32,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:33:32,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-09-10 02:33:32,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:32,895 INFO L225 Difference]: With dead ends: 597 [2019-09-10 02:33:32,896 INFO L226 Difference]: Without dead ends: 595 [2019-09-10 02:33:32,896 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 02:33:32,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-09-10 02:33:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-09-10 02:33:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-09-10 02:33:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 931 transitions. [2019-09-10 02:33:32,923 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 931 transitions. Word has length 147 [2019-09-10 02:33:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:32,924 INFO L475 AbstractCegarLoop]: Abstraction has 595 states and 931 transitions. [2019-09-10 02:33:32,924 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:33:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 931 transitions. [2019-09-10 02:33:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-09-10 02:33:32,930 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:32,930 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:32,931 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:32,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:32,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1478832147, now seen corresponding path program 1 times [2019-09-10 02:33:32,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:32,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:32,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:32,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:32,933 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-10 02:33:33,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:33:33,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:33:33,101 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:33,102 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:33:33,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:33:33,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:33:33,102 INFO L87 Difference]: Start difference. First operand 595 states and 931 transitions. Second operand 5 states. [2019-09-10 02:33:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:33,156 INFO L93 Difference]: Finished difference Result 597 states and 932 transitions. [2019-09-10 02:33:33,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:33:33,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-09-10 02:33:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:33,161 INFO L225 Difference]: With dead ends: 597 [2019-09-10 02:33:33,161 INFO L226 Difference]: Without dead ends: 595 [2019-09-10 02:33:33,162 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 02:33:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-09-10 02:33:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-09-10 02:33:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-09-10 02:33:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 930 transitions. [2019-09-10 02:33:33,184 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 930 transitions. Word has length 148 [2019-09-10 02:33:33,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:33,185 INFO L475 AbstractCegarLoop]: Abstraction has 595 states and 930 transitions. [2019-09-10 02:33:33,185 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:33:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 930 transitions. [2019-09-10 02:33:33,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-09-10 02:33:33,189 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:33:33,189 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:33:33,189 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:33:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:33,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1952468429, now seen corresponding path program 1 times [2019-09-10 02:33:33,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:33:33,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:33,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:33:33,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:33:33,191 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:33:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:33:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-10 02:33:33,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:33:33,477 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:33:33,478 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2019-09-10 02:33:33,492 INFO L207 CegarAbsIntRunner]: [55], [56], [62], [63], [140], [144], [147], [407], [408], [410], [411], [412], [414], [417], [419], [423], [439], [441], [443], [849], [852], [949], [952], [957], [960], [1026], [1031], [1064], [1065], [1100], [1102], [1145], [1147], [1150], [1152], [1158], [1162], [1163], [1199], [1235], [1271], [1307], [1310], [1313], [1346], [1347], [1348], [1401], [1406], [1411], [1416], [1421], [1424], [1428], [1613], [1616], [1638], [1654], [1667], [1670], [1676], [1680], [1778], [1779], [1821], [1824], [1826], [1829], [1905], [1907], [1909], [1984], [1997], [2011], [2025], [2039], [2053], [2055], [2321], [2325], [2328], [2346], [2515], [2516], [2517], [2518], [2519], [2520], [2521], [2522], [2523], [2553], [2554], [2555], [2556], [2557], [2558], [2561], [2562], [2563], [2564], [2565], [2566], [2567], [2568], [2569], [2619], [2620], [2621], [2622], [2651], [2652], [2653], [2654], [2665], [2683], [2684], [2689], [2690], [2691], [2692], [2697], [2698], [2699], [2725], [2739], [2740], [2741], [2757], [2758], [2759], [2760], [2791], [2792], [2793] [2019-09-10 02:33:33,556 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:33:33,556 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:33:33,642 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:33:33,643 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 131 root evaluator evaluations with a maximum evaluation depth of 0. Performed 131 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 252 variables. [2019-09-10 02:33:33,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:33:33,648 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:33:33,732 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:33:33,732 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:33:33,740 INFO L420 sIntCurrentIteration]: We unified 148 AI predicates to 148 [2019-09-10 02:33:33,740 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:33:33,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:33:33,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2019-09-10 02:33:33,741 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:33:33,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:33:33,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:33:33,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:33:33,743 INFO L87 Difference]: Start difference. First operand 595 states and 930 transitions. Second operand 2 states. [2019-09-10 02:33:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:33:33,743 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:33:33,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:33:33,744 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 149 [2019-09-10 02:33:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:33:33,744 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:33:33,744 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:33:33,745 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 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 02:33:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:33:33,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:33:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:33:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:33:33,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2019-09-10 02:33:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:33:33,746 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:33:33,746 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:33:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:33:33,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:33:33,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:33:33 BoogieIcfgContainer [2019-09-10 02:33:33,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:33:33,755 INFO L168 Benchmark]: Toolchain (without parser) took 8708.17 ms. Allocated memory was 135.3 MB in the beginning and 378.0 MB in the end (delta: 242.7 MB). Free memory was 87.4 MB in the beginning and 255.3 MB in the end (delta: -168.0 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. [2019-09-10 02:33:33,757 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:33:33,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1160.73 ms. Allocated memory was 135.3 MB in the beginning and 202.9 MB in the end (delta: 67.6 MB). Free memory was 87.2 MB in the beginning and 140.9 MB in the end (delta: -53.8 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:33:33,760 INFO L168 Benchmark]: Boogie Preprocessor took 198.85 ms. Allocated memory is still 202.9 MB. Free memory was 140.9 MB in the beginning and 131.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:33:33,765 INFO L168 Benchmark]: RCFGBuilder took 2627.47 ms. Allocated memory was 202.9 MB in the beginning and 258.5 MB in the end (delta: 55.6 MB). Free memory was 131.2 MB in the beginning and 135.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 91.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:33:33,766 INFO L168 Benchmark]: TraceAbstraction took 4717.25 ms. Allocated memory was 258.5 MB in the beginning and 378.0 MB in the end (delta: 119.5 MB). Free memory was 135.6 MB in the beginning and 255.3 MB in the end (delta: -119.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 02:33:33,769 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1160.73 ms. Allocated memory was 135.3 MB in the beginning and 202.9 MB in the end (delta: 67.6 MB). Free memory was 87.2 MB in the beginning and 140.9 MB in the end (delta: -53.8 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 198.85 ms. Allocated memory is still 202.9 MB. Free memory was 140.9 MB in the beginning and 131.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2627.47 ms. Allocated memory was 202.9 MB in the beginning and 258.5 MB in the end (delta: 55.6 MB). Free memory was 131.2 MB in the beginning and 135.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 91.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4717.25 ms. Allocated memory was 258.5 MB in the beginning and 378.0 MB in the end (delta: 119.5 MB). Free memory was 135.6 MB in the beginning and 255.3 MB in the end (delta: -119.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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 75 procedures, 921 locations, 1 error locations. SAFE Result, 4.6s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9454 SDtfs, 375 SDslu, 36549 SDs, 0 SdLazy, 470 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=785occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.9662162162162162 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, 0.6s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1591 NumberOfCodeBlocks, 1591 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1580 ConstructedInterpolants, 0 QuantifiedInterpolants, 269252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 227/231 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...