/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:30:44,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:30:44,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:30:44,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:30:44,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:30:44,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:30:44,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:30:44,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:30:44,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:30:44,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:30:44,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:30:44,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:30:44,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:30:44,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:30:44,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:30:44,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:30:44,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:30:44,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:30:44,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:30:44,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:30:44,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:30:44,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:30:44,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:30:44,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:30:44,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:30:44,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:30:44,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:30:44,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:30:44,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:30:44,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:30:44,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:30:44,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:30:44,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:30:44,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:30:44,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:30:44,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:30:44,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:30:44,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:30:44,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:30:44,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:30:44,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:30:44,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:30:44,931 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:30:44,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:30:44,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:30:44,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:30:44,932 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:30:44,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:30:44,933 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:30:44,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:30:44,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:30:44,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:30:44,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:30:44,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:30:44,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:30:44,934 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:30:44,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:30:44,934 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:30:44,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:30:44,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:30:44,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:30:44,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:30:44,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:30:44,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:30:44,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:30:44,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:30:44,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:30:44,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:30:44,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:30:44,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:30:44,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:30:45,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:30:45,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:30:45,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:30:45,225 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:30:45,226 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:30:45,227 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product20.cil.c [2019-11-06 21:30:45,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49dffa42/c38da80d8a4d41b48e2cdaff7763b6d8/FLAG37f361571 [2019-11-06 21:30:45,920 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:30:45,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product20.cil.c [2019-11-06 21:30:45,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49dffa42/c38da80d8a4d41b48e2cdaff7763b6d8/FLAG37f361571 [2019-11-06 21:30:46,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49dffa42/c38da80d8a4d41b48e2cdaff7763b6d8 [2019-11-06 21:30:46,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:30:46,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:30:46,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:30:46,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:30:46,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:30:46,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:30:46" (1/1) ... [2019-11-06 21:30:46,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710c7798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:46, skipping insertion in model container [2019-11-06 21:30:46,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:30:46" (1/1) ... [2019-11-06 21:30:46,169 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:30:46,257 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:30:46,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:30:46,997 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:30:47,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:30:47,245 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:30:47,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47 WrapperNode [2019-11-06 21:30:47,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:30:47,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:30:47,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:30:47,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:30:47,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47" (1/1) ... [2019-11-06 21:30:47,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47" (1/1) ... [2019-11-06 21:30:47,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47" (1/1) ... [2019-11-06 21:30:47,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47" (1/1) ... [2019-11-06 21:30:47,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47" (1/1) ... [2019-11-06 21:30:47,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47" (1/1) ... [2019-11-06 21:30:47,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47" (1/1) ... [2019-11-06 21:30:47,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:30:47,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:30:47,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:30:47,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:30:47,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:30:47,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:30:47,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:30:47,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:30:47,557 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:30:47,557 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:30:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:30:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:30:47,558 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:30:47,559 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:30:47,559 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:30:47,559 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:30:47,560 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:30:47,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:30:47,560 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:30:47,561 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:30:47,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:30:47,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:30:47,564 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:30:47,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:30:47,566 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-06 21:30:47,566 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:30:47,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:30:47,568 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:30:47,568 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-06 21:30:47,568 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:30:47,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:30:47,570 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:30:47,570 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-06 21:30:47,570 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:30:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-06 21:30:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:30:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:30:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-06 21:30:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-06 21:30:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:30:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:30:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:30:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:30:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:30:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:30:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:30:47,572 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:30:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:30:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:30:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:30:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:30:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:30:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:30:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:30:47,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:30:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:30:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:30:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:30:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:30:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:30:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:30:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:30:47,574 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:30:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:30:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:30:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:30:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:30:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:30:47,575 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:30:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:30:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:30:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:30:47,576 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:30:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:30:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:30:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:30:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:30:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:30:47,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:30:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:30:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:30:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:30:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:30:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:30:47,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:30:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:30:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:30:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:30:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:30:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:30:47,579 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:30:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:30:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:30:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:30:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:30:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:30:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:30:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:30:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:30:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:30:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:30:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:30:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:30:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:30:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:30:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:30:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:30:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:30:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-06 21:30:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-06 21:30:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:30:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:30:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:30:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:30:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:30:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:30:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:30:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-06 21:30:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:30:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:30:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-06 21:30:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:30:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:30:47,585 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:30:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-06 21:30:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:30:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-06 21:30:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:30:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:30:47,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:30:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:30:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:30:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:30:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:30:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:30:47,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:30:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:30:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:30:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:30:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:30:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:30:47,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:30:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:30:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:30:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:30:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:30:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:30:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:30:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:30:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:30:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:30:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:30:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:30:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:30:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:30:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:30:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:30:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:30:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:30:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:30:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:30:47,591 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:30:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:30:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:30:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:30:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:30:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:30:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:30:47,592 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:30:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:30:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:30:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:30:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:30:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:30:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:30:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:30:47,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:30:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:30:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:30:47,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:30:49,871 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:30:49,871 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:30:49,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:30:49 BoogieIcfgContainer [2019-11-06 21:30:49,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:30:49,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:30:49,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:30:49,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:30:49,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:30:46" (1/3) ... [2019-11-06 21:30:49,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1509458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:30:49, skipping insertion in model container [2019-11-06 21:30:49,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:47" (2/3) ... [2019-11-06 21:30:49,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1509458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:30:49, skipping insertion in model container [2019-11-06 21:30:49,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:30:49" (3/3) ... [2019-11-06 21:30:49,881 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2019-11-06 21:30:49,891 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:30:49,900 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:30:49,912 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:30:49,943 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:30:49,943 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:30:49,944 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:30:49,944 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:30:49,944 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:30:49,944 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:30:49,944 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:30:49,944 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:30:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states. [2019-11-06 21:30:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-06 21:30:50,016 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:50,018 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:50,022 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:50,028 INFO L82 PathProgramCache]: Analyzing trace with hash 669576515, now seen corresponding path program 1 times [2019-11-06 21:30:50,038 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:50,038 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695486990] [2019-11-06 21:30:50,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:51,742 WARN L191 SmtUtils]: Spent 994.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:30:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,079 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:30:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,261 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:52,640 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695486990] [2019-11-06 21:30:52,641 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143146398] [2019-11-06 21:30:52,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:30:53,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:30:53,297 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:53,297 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-11-06 21:30:53,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190772782] [2019-11-06 21:30:53,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:30:53,304 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:53,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:30:53,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:30:53,317 INFO L87 Difference]: Start difference. First operand 787 states. Second operand 2 states. [2019-11-06 21:30:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:53,402 INFO L93 Difference]: Finished difference Result 663 states and 1051 transitions. [2019-11-06 21:30:53,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:30:53,406 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-11-06 21:30:53,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:53,450 INFO L225 Difference]: With dead ends: 663 [2019-11-06 21:30:53,450 INFO L226 Difference]: Without dead ends: 626 [2019-11-06 21:30:53,456 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:30:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-11-06 21:30:53,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-11-06 21:30:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-06 21:30:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 996 transitions. [2019-11-06 21:30:53,598 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 996 transitions. Word has length 116 [2019-11-06 21:30:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:53,603 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 996 transitions. [2019-11-06 21:30:53,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:30:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 996 transitions. [2019-11-06 21:30:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-06 21:30:53,611 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:53,611 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:53,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:53,814 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:53,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:53,815 INFO L82 PathProgramCache]: Analyzing trace with hash 835424246, now seen corresponding path program 1 times [2019-11-06 21:30:53,816 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:53,816 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425937622] [2019-11-06 21:30:53,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:54,930 WARN L191 SmtUtils]: Spent 914.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:30:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,181 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:30:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,364 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:55,690 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425937622] [2019-11-06 21:30:55,691 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797224797] [2019-11-06 21:30:55,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:56,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:30:56,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:30:56,404 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:56,404 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:30:56,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476860139] [2019-11-06 21:30:56,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:30:56,406 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:56,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:30:56,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:30:56,407 INFO L87 Difference]: Start difference. First operand 626 states and 996 transitions. Second operand 4 states. [2019-11-06 21:30:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:56,543 INFO L93 Difference]: Finished difference Result 1224 states and 1965 transitions. [2019-11-06 21:30:56,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:30:56,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-06 21:30:56,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:56,553 INFO L225 Difference]: With dead ends: 1224 [2019-11-06 21:30:56,553 INFO L226 Difference]: Without dead ends: 626 [2019-11-06 21:30:56,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:30:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-11-06 21:30:56,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-11-06 21:30:56,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-06 21:30:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 995 transitions. [2019-11-06 21:30:56,626 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 995 transitions. Word has length 118 [2019-11-06 21:30:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:56,627 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 995 transitions. [2019-11-06 21:30:56,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:30:56,627 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 995 transitions. [2019-11-06 21:30:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-06 21:30:56,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:56,636 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:56,843 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:56,844 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:56,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:56,845 INFO L82 PathProgramCache]: Analyzing trace with hash 963635798, now seen corresponding path program 1 times [2019-11-06 21:30:56,845 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:56,845 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676951069] [2019-11-06 21:30:56,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:57,878 WARN L191 SmtUtils]: Spent 913.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:30:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,135 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:30:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,290 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:58,687 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676951069] [2019-11-06 21:30:58,687 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870402992] [2019-11-06 21:30:58,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:59,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:30:59,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:30:59,277 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:59,278 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:30:59,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915923381] [2019-11-06 21:30:59,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:30:59,279 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:59,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:30:59,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:30:59,280 INFO L87 Difference]: Start difference. First operand 626 states and 995 transitions. Second operand 4 states. [2019-11-06 21:30:59,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:59,361 INFO L93 Difference]: Finished difference Result 1224 states and 1963 transitions. [2019-11-06 21:30:59,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:30:59,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-06 21:30:59,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:59,369 INFO L225 Difference]: With dead ends: 1224 [2019-11-06 21:30:59,370 INFO L226 Difference]: Without dead ends: 626 [2019-11-06 21:30:59,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:30:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-11-06 21:30:59,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-11-06 21:30:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-06 21:30:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 994 transitions. [2019-11-06 21:30:59,416 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 994 transitions. Word has length 120 [2019-11-06 21:30:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:59,416 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 994 transitions. [2019-11-06 21:30:59,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:30:59,417 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 994 transitions. [2019-11-06 21:30:59,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-06 21:30:59,419 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:59,420 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:59,626 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:59,627 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:59,627 INFO L82 PathProgramCache]: Analyzing trace with hash 684702014, now seen corresponding path program 1 times [2019-11-06 21:30:59,628 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:59,628 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956200624] [2019-11-06 21:30:59,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:00,578 WARN L191 SmtUtils]: Spent 856.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:00,851 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:01,255 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956200624] [2019-11-06 21:31:01,256 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863249727] [2019-11-06 21:31:01,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:01,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:01,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:01,940 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:01,940 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:01,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358490124] [2019-11-06 21:31:01,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:01,941 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:01,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:01,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:01,942 INFO L87 Difference]: Start difference. First operand 626 states and 994 transitions. Second operand 4 states. [2019-11-06 21:31:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:02,100 INFO L93 Difference]: Finished difference Result 1231 states and 1970 transitions. [2019-11-06 21:31:02,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:02,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-11-06 21:31:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:02,107 INFO L225 Difference]: With dead ends: 1231 [2019-11-06 21:31:02,107 INFO L226 Difference]: Without dead ends: 635 [2019-11-06 21:31:02,110 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-11-06 21:31:02,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-11-06 21:31:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-06 21:31:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1006 transitions. [2019-11-06 21:31:02,139 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1006 transitions. Word has length 122 [2019-11-06 21:31:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:02,140 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1006 transitions. [2019-11-06 21:31:02,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1006 transitions. [2019-11-06 21:31:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-06 21:31:02,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:02,143 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:02,358 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:02,358 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:02,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:02,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1568855861, now seen corresponding path program 1 times [2019-11-06 21:31:02,359 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:02,359 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135593912] [2019-11-06 21:31:02,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,281 WARN L191 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,528 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,688 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:04,063 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135593912] [2019-11-06 21:31:04,073 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713270627] [2019-11-06 21:31:04,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:04,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:04,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:04,717 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:04,717 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:04,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919028593] [2019-11-06 21:31:04,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:04,720 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:04,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:04,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:04,721 INFO L87 Difference]: Start difference. First operand 635 states and 1006 transitions. Second operand 4 states. [2019-11-06 21:31:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:04,813 INFO L93 Difference]: Finished difference Result 1233 states and 1971 transitions. [2019-11-06 21:31:04,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:04,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-11-06 21:31:04,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:04,823 INFO L225 Difference]: With dead ends: 1233 [2019-11-06 21:31:04,824 INFO L226 Difference]: Without dead ends: 635 [2019-11-06 21:31:04,832 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-11-06 21:31:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-11-06 21:31:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-06 21:31:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1005 transitions. [2019-11-06 21:31:04,872 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1005 transitions. Word has length 123 [2019-11-06 21:31:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:04,872 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1005 transitions. [2019-11-06 21:31:04,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:04,873 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1005 transitions. [2019-11-06 21:31:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-06 21:31:04,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:04,880 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:05,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:05,099 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:05,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:05,100 INFO L82 PathProgramCache]: Analyzing trace with hash 43826914, now seen corresponding path program 1 times [2019-11-06 21:31:05,100 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:05,100 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771213347] [2019-11-06 21:31:05,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,240 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,578 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,811 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:07,099 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771213347] [2019-11-06 21:31:07,099 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633757559] [2019-11-06 21:31:07,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:07,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:07,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:07,727 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:07,727 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:07,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935087196] [2019-11-06 21:31:07,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:07,729 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:07,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:07,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:07,729 INFO L87 Difference]: Start difference. First operand 635 states and 1005 transitions. Second operand 4 states. [2019-11-06 21:31:07,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:07,809 INFO L93 Difference]: Finished difference Result 1233 states and 1970 transitions. [2019-11-06 21:31:07,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:07,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-11-06 21:31:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:07,817 INFO L225 Difference]: With dead ends: 1233 [2019-11-06 21:31:07,817 INFO L226 Difference]: Without dead ends: 635 [2019-11-06 21:31:07,821 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:07,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-11-06 21:31:07,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2019-11-06 21:31:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2019-11-06 21:31:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1004 transitions. [2019-11-06 21:31:07,848 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1004 transitions. Word has length 124 [2019-11-06 21:31:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:07,851 INFO L462 AbstractCegarLoop]: Abstraction has 635 states and 1004 transitions. [2019-11-06 21:31:07,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1004 transitions. [2019-11-06 21:31:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-06 21:31:07,854 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:07,855 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:08,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:08,066 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:08,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1250885551, now seen corresponding path program 1 times [2019-11-06 21:31:08,067 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:08,067 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94946310] [2019-11-06 21:31:08,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,124 WARN L191 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,393 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,560 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:09,905 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94946310] [2019-11-06 21:31:09,905 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059080601] [2019-11-06 21:31:09,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:10,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:31:10,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:10,759 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:10,759 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-11-06 21:31:10,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79425415] [2019-11-06 21:31:10,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:31:10,763 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:10,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:31:10,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:31:10,764 INFO L87 Difference]: Start difference. First operand 635 states and 1004 transitions. Second operand 7 states. [2019-11-06 21:31:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:10,975 INFO L93 Difference]: Finished difference Result 1240 states and 1979 transitions. [2019-11-06 21:31:10,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:31:10,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2019-11-06 21:31:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:10,981 INFO L225 Difference]: With dead ends: 1240 [2019-11-06 21:31:10,981 INFO L226 Difference]: Without dead ends: 646 [2019-11-06 21:31:10,986 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:31:10,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2019-11-06 21:31:11,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 642. [2019-11-06 21:31:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1014 transitions. [2019-11-06 21:31:11,015 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1014 transitions. Word has length 125 [2019-11-06 21:31:11,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:11,016 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1014 transitions. [2019-11-06 21:31:11,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:31:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1014 transitions. [2019-11-06 21:31:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-06 21:31:11,019 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:11,019 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:11,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:11,235 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:11,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:11,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1116294219, now seen corresponding path program 1 times [2019-11-06 21:31:11,236 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:11,237 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559519339] [2019-11-06 21:31:11,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,206 WARN L191 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,589 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,792 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 21:31:13,115 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559519339] [2019-11-06 21:31:13,115 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681473452] [2019-11-06 21:31:13,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:13,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:13,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:13,979 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:13,979 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-11-06 21:31:13,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333169934] [2019-11-06 21:31:13,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:13,980 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:13,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:13,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:31:13,981 INFO L87 Difference]: Start difference. First operand 642 states and 1014 transitions. Second operand 4 states. [2019-11-06 21:31:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:14,151 INFO L93 Difference]: Finished difference Result 1245 states and 1990 transitions. [2019-11-06 21:31:14,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:14,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-11-06 21:31:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:14,157 INFO L225 Difference]: With dead ends: 1245 [2019-11-06 21:31:14,157 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:14,160 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:31:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:14,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1009 transitions. [2019-11-06 21:31:14,184 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1009 transitions. Word has length 126 [2019-11-06 21:31:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:14,186 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1009 transitions. [2019-11-06 21:31:14,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1009 transitions. [2019-11-06 21:31:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-06 21:31:14,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:14,189 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:14,403 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:14,403 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:14,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:14,404 INFO L82 PathProgramCache]: Analyzing trace with hash -162638701, now seen corresponding path program 1 times [2019-11-06 21:31:14,404 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:14,404 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468624746] [2019-11-06 21:31:14,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,268 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,526 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,687 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 21:31:15,939 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468624746] [2019-11-06 21:31:15,939 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668342921] [2019-11-06 21:31:15,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:16,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 3189 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:16,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:16,652 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:16,652 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-11-06 21:31:16,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040806266] [2019-11-06 21:31:16,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:16,653 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:16,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:16,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:31:16,653 INFO L87 Difference]: Start difference. First operand 642 states and 1009 transitions. Second operand 4 states. [2019-11-06 21:31:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:16,816 INFO L93 Difference]: Finished difference Result 1245 states and 1980 transitions. [2019-11-06 21:31:16,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:16,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-11-06 21:31:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:16,822 INFO L225 Difference]: With dead ends: 1245 [2019-11-06 21:31:16,822 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:16,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:31:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:16,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1004 transitions. [2019-11-06 21:31:16,859 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1004 transitions. Word has length 128 [2019-11-06 21:31:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:16,859 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1004 transitions. [2019-11-06 21:31:16,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1004 transitions. [2019-11-06 21:31:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-06 21:31:16,862 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:16,863 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:17,072 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:17,072 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:17,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2001392257, now seen corresponding path program 1 times [2019-11-06 21:31:17,073 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:17,073 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735227969] [2019-11-06 21:31:17,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,225 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,479 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,647 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 21:31:18,902 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735227969] [2019-11-06 21:31:18,902 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623659826] [2019-11-06 21:31:18,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:19,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 3191 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:19,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:19,574 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:19,574 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-11-06 21:31:19,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462257147] [2019-11-06 21:31:19,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:19,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:19,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:19,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:31:19,575 INFO L87 Difference]: Start difference. First operand 642 states and 1004 transitions. Second operand 4 states. [2019-11-06 21:31:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:19,780 INFO L93 Difference]: Finished difference Result 1281 states and 2028 transitions. [2019-11-06 21:31:19,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:19,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-11-06 21:31:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:19,786 INFO L225 Difference]: With dead ends: 1281 [2019-11-06 21:31:19,786 INFO L226 Difference]: Without dead ends: 684 [2019-11-06 21:31:19,789 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:31:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states.