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_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:20:30,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:20:30,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:20:31,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:20:31,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:20:31,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:20:31,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:20:31,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:20:31,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:20:31,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:20:31,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:20:31,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:20:31,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:20:31,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:20:31,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:20:31,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:20:31,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:20:31,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:20:31,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:20:31,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:20:31,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:20:31,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:20:31,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:20:31,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:20:31,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:20:31,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:20:31,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:20:31,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:20:31,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:20:31,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:20:31,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:20:31,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:20:31,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:20:31,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:20:31,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:20:31,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:20:31,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:20:31,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:20:31,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:20:31,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:20:31,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:20:31,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:20:31,106 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:20:31,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:20:31,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:20:31,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:20:31,108 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:20:31,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:20:31,109 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:20:31,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:20:31,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:20:31,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:20:31,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:20:31,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:20:31,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:20:31,111 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:20:31,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:20:31,112 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:20:31,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:20:31,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:20:31,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:20:31,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:20:31,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:20:31,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:20:31,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:20:31,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:20:31,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:20:31,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:20:31,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:20:31,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:20:31,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:20:31,425 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:20:31,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:20:31,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:20:31,453 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:20:31,453 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:20:31,454 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product03.cil.c [2019-10-13 19:20:31,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f1c69d3/3334bbc6336b4600b77dee487a5bc79b/FLAG6b8d05b8f [2019-10-13 19:20:32,200 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:20:32,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product03.cil.c [2019-10-13 19:20:32,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f1c69d3/3334bbc6336b4600b77dee487a5bc79b/FLAG6b8d05b8f [2019-10-13 19:20:32,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f1c69d3/3334bbc6336b4600b77dee487a5bc79b [2019-10-13 19:20:32,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:20:32,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:20:32,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:32,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:20:32,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:20:32,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:32" (1/1) ... [2019-10-13 19:20:32,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b14516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:32, skipping insertion in model container [2019-10-13 19:20:32,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:32" (1/1) ... [2019-10-13 19:20:32,407 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:20:32,487 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:20:33,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:33,148 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:20:33,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:33,324 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:20:33,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33 WrapperNode [2019-10-13 19:20:33,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:33,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:20:33,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:20:33,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:20:33,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33" (1/1) ... [2019-10-13 19:20:33,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33" (1/1) ... [2019-10-13 19:20:33,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33" (1/1) ... [2019-10-13 19:20:33,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33" (1/1) ... [2019-10-13 19:20:33,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33" (1/1) ... [2019-10-13 19:20:33,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33" (1/1) ... [2019-10-13 19:20:33,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33" (1/1) ... [2019-10-13 19:20:33,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:20:33,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:20:33,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:20:33,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:20:33,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:20:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:20:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:20:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:20:33,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:20:33,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:20:33,630 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:20:33,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:33,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:20:33,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:20:33,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:20:33,633 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:20:33,634 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:20:33,634 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:20:33,637 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:20:33,638 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:20:33,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:20:33,638 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:20:33,638 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:20:33,639 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:20:33,639 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:20:33,639 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:20:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:20:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:20:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:20:33,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:20:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:20:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:20:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-10-13 19:20:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:20:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:20:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:20:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-13 19:20:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:20:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:20:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:20:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:20:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:20:33,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 19:20:33,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 19:20:33,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:20:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:20:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:20:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:20:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:20:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:20:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:20:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:20:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:20:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:20:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:20:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:20:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:20:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:20:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:20:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:20:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:20:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:20:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:20:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:20:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:20:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:20:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:20:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:20:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:20:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:20:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:20:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:20:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:20:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:20:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:20:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:20:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:20:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:20:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:20:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:20:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:20:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:20:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:20:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:20:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:20:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:20:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:20:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:20:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:20:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:20:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:20:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:20:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:20:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:20:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:20:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:20:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:20:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:20:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:20:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:20:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:20:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:20:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:20:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:20:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:20:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:20:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:20:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:20:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:20:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:20:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:20:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:20:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:20:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:20:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:20:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:20:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:20:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:20:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:20:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:20:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 19:20:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 19:20:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:20:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:20:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:20:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:20:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:20:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-10-13 19:20:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:20:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:20:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-13 19:20:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:33,673 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:20:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:20:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:20:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:20:33,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:20:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:20:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:20:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:20:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:20:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:20:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:20:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:20:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:20:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:20:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:20:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:20:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:20:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:20:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:20:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:20:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:20:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:20:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:20:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:20:36,168 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:20:36,169 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:20:36,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:36 BoogieIcfgContainer [2019-10-13 19:20:36,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:20:36,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:20:36,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:20:36,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:20:36,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:32" (1/3) ... [2019-10-13 19:20:36,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554327a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:36, skipping insertion in model container [2019-10-13 19:20:36,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:33" (2/3) ... [2019-10-13 19:20:36,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554327a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:36, skipping insertion in model container [2019-10-13 19:20:36,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:36" (3/3) ... [2019-10-13 19:20:36,179 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product03.cil.c [2019-10-13 19:20:36,188 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:20:36,198 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:20:36,209 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:20:36,250 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:20:36,250 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:20:36,251 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:20:36,251 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:20:36,251 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:20:36,251 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:20:36,251 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:20:36,251 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:20:36,293 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states. [2019-10-13 19:20:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 19:20:36,322 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:36,328 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:36,330 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:36,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1215975064, now seen corresponding path program 1 times [2019-10-13 19:20:36,343 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:36,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174674464] [2019-10-13 19:20:36,343 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:36,343 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:36,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,845 WARN L191 SmtUtils]: Spent 930.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,128 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,304 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:20:38,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174674464] [2019-10-13 19:20:38,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628378484] [2019-10-13 19:20:38,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:39,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 3256 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:20:39,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 19:20:39,480 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:39,480 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-10-13 19:20:39,480 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190734183] [2019-10-13 19:20:39,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:20:39,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:39,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:20:39,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:39,503 INFO L87 Difference]: Start difference. First operand 750 states. Second operand 2 states. [2019-10-13 19:20:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:39,606 INFO L93 Difference]: Finished difference Result 633 states and 1010 transitions. [2019-10-13 19:20:39,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:20:39,608 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-13 19:20:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:39,642 INFO L225 Difference]: With dead ends: 633 [2019-10-13 19:20:39,644 INFO L226 Difference]: Without dead ends: 596 [2019-10-13 19:20:39,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2019-10-13 19:20:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2019-10-13 19:20:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2019-10-13 19:20:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 955 transitions. [2019-10-13 19:20:39,778 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 955 transitions. Word has length 164 [2019-10-13 19:20:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:39,782 INFO L462 AbstractCegarLoop]: Abstraction has 596 states and 955 transitions. [2019-10-13 19:20:39,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:20:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 955 transitions. [2019-10-13 19:20:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 19:20:39,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:39,791 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:40,004 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:40,005 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:40,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1543512037, now seen corresponding path program 1 times [2019-10-13 19:20:40,007 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:40,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138064974] [2019-10-13 19:20:40,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:40,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:40,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:40,971 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,204 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,392 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:20:41,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138064974] [2019-10-13 19:20:41,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517388751] [2019-10-13 19:20:41,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:42,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 3259 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:42,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 19:20:42,447 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:42,447 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2019-10-13 19:20:42,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744749410] [2019-10-13 19:20:42,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:20:42,449 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:42,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:20:42,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:42,450 INFO L87 Difference]: Start difference. First operand 596 states and 955 transitions. Second operand 3 states. [2019-10-13 19:20:42,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:42,608 INFO L93 Difference]: Finished difference Result 1565 states and 2548 transitions. [2019-10-13 19:20:42,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:20:42,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-10-13 19:20:42,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:42,625 INFO L225 Difference]: With dead ends: 1565 [2019-10-13 19:20:42,625 INFO L226 Difference]: Without dead ends: 1078 [2019-10-13 19:20:42,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:42,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2019-10-13 19:20:42,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1056. [2019-10-13 19:20:42,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2019-10-13 19:20:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1715 transitions. [2019-10-13 19:20:42,730 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1715 transitions. Word has length 166 [2019-10-13 19:20:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:42,730 INFO L462 AbstractCegarLoop]: Abstraction has 1056 states and 1715 transitions. [2019-10-13 19:20:42,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:20:42,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1715 transitions. [2019-10-13 19:20:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 19:20:42,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:42,736 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:42,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:42,950 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:42,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2049855385, now seen corresponding path program 1 times [2019-10-13 19:20:42,951 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:42,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062498201] [2019-10-13 19:20:42,951 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:42,951 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:42,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:43,816 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,157 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,318 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:20:44,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062498201] [2019-10-13 19:20:44,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697506580] [2019-10-13 19:20:44,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:45,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:45,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:45,315 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:45,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:45,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889154030] [2019-10-13 19:20:45,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:45,318 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:45,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:45,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:45,319 INFO L87 Difference]: Start difference. First operand 1056 states and 1715 transitions. Second operand 4 states. [2019-10-13 19:20:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:45,422 INFO L93 Difference]: Finished difference Result 2084 states and 3403 transitions. [2019-10-13 19:20:45,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:45,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-13 19:20:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:45,432 INFO L225 Difference]: With dead ends: 2084 [2019-10-13 19:20:45,432 INFO L226 Difference]: Without dead ends: 1056 [2019-10-13 19:20:45,437 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2019-10-13 19:20:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1056. [2019-10-13 19:20:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2019-10-13 19:20:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1714 transitions. [2019-10-13 19:20:45,495 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1714 transitions. Word has length 166 [2019-10-13 19:20:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:45,496 INFO L462 AbstractCegarLoop]: Abstraction has 1056 states and 1714 transitions. [2019-10-13 19:20:45,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1714 transitions. [2019-10-13 19:20:45,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 19:20:45,503 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:45,503 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:45,707 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:45,708 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:45,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:45,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1271242485, now seen corresponding path program 1 times [2019-10-13 19:20:45,709 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:45,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335776127] [2019-10-13 19:20:45,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:45,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:45,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:46,653 WARN L191 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:46,912 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,064 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:20:47,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335776127] [2019-10-13 19:20:47,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222512082] [2019-10-13 19:20:47,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:47,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 3262 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:47,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:48,056 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:48,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:48,057 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506711299] [2019-10-13 19:20:48,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:48,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:48,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:48,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:48,058 INFO L87 Difference]: Start difference. First operand 1056 states and 1714 transitions. Second operand 4 states. [2019-10-13 19:20:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:48,149 INFO L93 Difference]: Finished difference Result 2084 states and 3401 transitions. [2019-10-13 19:20:48,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:48,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-10-13 19:20:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:48,159 INFO L225 Difference]: With dead ends: 2084 [2019-10-13 19:20:48,159 INFO L226 Difference]: Without dead ends: 1056 [2019-10-13 19:20:48,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2019-10-13 19:20:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1056. [2019-10-13 19:20:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2019-10-13 19:20:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1713 transitions. [2019-10-13 19:20:48,210 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1713 transitions. Word has length 168 [2019-10-13 19:20:48,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:48,210 INFO L462 AbstractCegarLoop]: Abstraction has 1056 states and 1713 transitions. [2019-10-13 19:20:48,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1713 transitions. [2019-10-13 19:20:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 19:20:48,215 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:48,215 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:48,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:48,423 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:48,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash -618683487, now seen corresponding path program 1 times [2019-10-13 19:20:48,424 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:48,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336276191] [2019-10-13 19:20:48,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:48,425 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:48,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,445 WARN L191 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,682 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:20:50,314 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336276191] [2019-10-13 19:20:50,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046347475] [2019-10-13 19:20:50,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:50,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 3264 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:50,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:51,025 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:51,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:51,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873503035] [2019-10-13 19:20:51,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:51,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:51,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:51,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:51,029 INFO L87 Difference]: Start difference. First operand 1056 states and 1713 transitions. Second operand 4 states. [2019-10-13 19:20:51,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:51,122 INFO L93 Difference]: Finished difference Result 2091 states and 3408 transitions. [2019-10-13 19:20:51,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:51,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-13 19:20:51,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:51,135 INFO L225 Difference]: With dead ends: 2091 [2019-10-13 19:20:51,135 INFO L226 Difference]: Without dead ends: 1065 [2019-10-13 19:20:51,142 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:51,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2019-10-13 19:20:51,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2019-10-13 19:20:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-13 19:20:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1725 transitions. [2019-10-13 19:20:51,192 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1725 transitions. Word has length 170 [2019-10-13 19:20:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:51,192 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1725 transitions. [2019-10-13 19:20:51,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1725 transitions. [2019-10-13 19:20:51,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 19:20:51,199 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:51,200 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:51,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:51,410 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:51,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:51,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1482424208, now seen corresponding path program 1 times [2019-10-13 19:20:51,410 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:51,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109953021] [2019-10-13 19:20:51,411 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:51,411 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:51,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,291 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,490 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,653 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:20:53,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109953021] [2019-10-13 19:20:53,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426126105] [2019-10-13 19:20:53,227 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 [2019-10-13 19:20:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:53,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 3265 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:53,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:53,813 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:53,813 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:53,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529443621] [2019-10-13 19:20:53,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:53,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:53,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:53,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:53,815 INFO L87 Difference]: Start difference. First operand 1065 states and 1725 transitions. Second operand 4 states. [2019-10-13 19:20:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:53,906 INFO L93 Difference]: Finished difference Result 2093 states and 3409 transitions. [2019-10-13 19:20:53,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:53,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-13 19:20:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:53,915 INFO L225 Difference]: With dead ends: 2093 [2019-10-13 19:20:53,915 INFO L226 Difference]: Without dead ends: 1065 [2019-10-13 19:20:53,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2019-10-13 19:20:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2019-10-13 19:20:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-13 19:20:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1724 transitions. [2019-10-13 19:20:53,967 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1724 transitions. Word has length 171 [2019-10-13 19:20:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:53,967 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1724 transitions. [2019-10-13 19:20:53,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1724 transitions. [2019-10-13 19:20:53,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 19:20:53,972 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:53,973 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:54,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:54,181 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:54,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:54,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1945680261, now seen corresponding path program 1 times [2019-10-13 19:20:54,182 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:54,182 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498970676] [2019-10-13 19:20:54,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:54,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:54,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,301 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,531 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,680 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:20:56,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498970676] [2019-10-13 19:20:56,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306005845] [2019-10-13 19:20:56,211 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 [2019-10-13 19:20:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:56,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 3266 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:56,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:20:56,784 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:56,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:20:56,784 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804422921] [2019-10-13 19:20:56,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:56,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:56,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:56,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:56,786 INFO L87 Difference]: Start difference. First operand 1065 states and 1724 transitions. Second operand 4 states. [2019-10-13 19:20:56,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:56,869 INFO L93 Difference]: Finished difference Result 2093 states and 3408 transitions. [2019-10-13 19:20:56,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:56,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-13 19:20:56,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:56,877 INFO L225 Difference]: With dead ends: 2093 [2019-10-13 19:20:56,878 INFO L226 Difference]: Without dead ends: 1065 [2019-10-13 19:20:56,883 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:20:56,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2019-10-13 19:20:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2019-10-13 19:20:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-13 19:20:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1723 transitions. [2019-10-13 19:20:56,920 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1723 transitions. Word has length 172 [2019-10-13 19:20:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:56,920 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1723 transitions. [2019-10-13 19:20:56,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1723 transitions. [2019-10-13 19:20:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 19:20:56,925 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:56,925 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:57,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:57,134 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:57,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:57,134 INFO L82 PathProgramCache]: Analyzing trace with hash 982032148, now seen corresponding path program 1 times [2019-10-13 19:20:57,134 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:57,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624446986] [2019-10-13 19:20:57,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:57,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:57,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,018 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:20:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,306 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:20:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,503 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:20:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:20:58,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624446986] [2019-10-13 19:20:58,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890818701] [2019-10-13 19:20:58,955 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 [2019-10-13 19:20:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:59,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:59,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:20:59,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:59,555 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-13 19:20:59,556 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723337523] [2019-10-13 19:20:59,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:59,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:59,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:59,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:20:59,560 INFO L87 Difference]: Start difference. First operand 1065 states and 1723 transitions. Second operand 4 states. [2019-10-13 19:20:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:59,727 INFO L93 Difference]: Finished difference Result 2092 states and 3408 transitions. [2019-10-13 19:20:59,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:59,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-13 19:20:59,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:59,736 INFO L225 Difference]: With dead ends: 2092 [2019-10-13 19:20:59,736 INFO L226 Difference]: Without dead ends: 1065 [2019-10-13 19:20:59,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:20:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2019-10-13 19:20:59,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2019-10-13 19:20:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-13 19:20:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1718 transitions. [2019-10-13 19:20:59,801 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1718 transitions. Word has length 173 [2019-10-13 19:20:59,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:59,803 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1718 transitions. [2019-10-13 19:20:59,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1718 transitions. [2019-10-13 19:20:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 19:20:59,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:59,810 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:00,020 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:00,020 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:00,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1458586870, now seen corresponding path program 1 times [2019-10-13 19:21:00,022 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:00,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179528861] [2019-10-13 19:21:00,022 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:00,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:00,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,971 WARN L191 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,372 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,549 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:21:01,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179528861] [2019-10-13 19:21:01,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54050269] [2019-10-13 19:21:01,930 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 [2019-10-13 19:21:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:02,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:02,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:02,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-10-13 19:21:02,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155592296] [2019-10-13 19:21:02,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:02,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:02,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:02,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:02,533 INFO L87 Difference]: Start difference. First operand 1065 states and 1718 transitions. Second operand 4 states. [2019-10-13 19:21:02,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:02,702 INFO L93 Difference]: Finished difference Result 2092 states and 3398 transitions. [2019-10-13 19:21:02,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:02,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2019-10-13 19:21:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:02,710 INFO L225 Difference]: With dead ends: 2092 [2019-10-13 19:21:02,710 INFO L226 Difference]: Without dead ends: 1065 [2019-10-13 19:21:02,715 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:21:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2019-10-13 19:21:02,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1065. [2019-10-13 19:21:02,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-13 19:21:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1713 transitions. [2019-10-13 19:21:02,748 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1713 transitions. Word has length 175 [2019-10-13 19:21:02,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:02,748 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1713 transitions. [2019-10-13 19:21:02,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1713 transitions. [2019-10-13 19:21:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 19:21:02,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:02,753 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:02,960 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:02,961 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1544496906, now seen corresponding path program 1 times [2019-10-13 19:21:02,962 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:02,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140416604] [2019-10-13 19:21:02,962 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:02,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:02,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,802 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-13 19:21:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,113 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2019-10-13 19:21:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,341 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat