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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:06:29,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:06:29,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:06:29,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:06:29,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:06:29,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:06:29,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:06:29,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:06:29,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:06:29,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:06:29,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:06:29,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:06:29,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:06:29,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:06:29,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:06:29,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:06:29,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:06:29,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:06:29,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:06:29,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:06:29,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:06:29,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:06:29,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:06:29,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:06:29,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:06:29,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:06:29,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:06:29,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:06:29,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:06:29,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:06:29,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:06:29,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:06:29,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:06:29,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:06:29,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:06:29,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:06:29,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:06:29,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:06:29,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:06:29,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:06:29,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:06:29,177 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 [2019-10-15 03:06:29,193 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:06:29,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:06:29,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:06:29,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:06:29,195 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:06:29,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:06:29,196 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:06:29,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:06:29,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:06:29,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:06:29,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:06:29,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:06:29,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:06:29,197 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:06:29,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:06:29,198 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:06:29,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:06:29,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:06:29,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:06:29,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:06:29,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:06:29,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:29,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:06:29,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:06:29,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:06:29,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:06:29,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:06:29,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:06:29,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:06:29,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:06:29,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:06:29,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:06:29,642 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:06:29,642 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:06:29,643 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c [2019-10-15 03:06:29,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e9a0a89/2b899d96a04b400f8359f63385393b91/FLAG7e80bd4cc [2019-10-15 03:06:30,279 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:06:30,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c [2019-10-15 03:06:30,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e9a0a89/2b899d96a04b400f8359f63385393b91/FLAG7e80bd4cc [2019-10-15 03:06:30,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e9a0a89/2b899d96a04b400f8359f63385393b91 [2019-10-15 03:06:30,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:06:30,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:06:30,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:30,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:06:30,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:06:30,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a513961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:30, skipping insertion in model container [2019-10-15 03:06:30,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:30" (1/1) ... [2019-10-15 03:06:30,520 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:06:30,605 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:06:31,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:31,400 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:06:31,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:31,682 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:06:31,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31 WrapperNode [2019-10-15 03:06:31,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:31,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:06:31,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:06:31,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:06:31,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31" (1/1) ... [2019-10-15 03:06:31,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31" (1/1) ... [2019-10-15 03:06:31,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31" (1/1) ... [2019-10-15 03:06:31,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31" (1/1) ... [2019-10-15 03:06:31,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31" (1/1) ... [2019-10-15 03:06:31,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31" (1/1) ... [2019-10-15 03:06:31,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31" (1/1) ... [2019-10-15 03:06:31,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:06:31,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:06:31,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:06:31,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:06:31,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31" (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 [2019-10-15 03:06:32,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:06:32,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:06:32,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:32,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:06:32,032 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:06:32,034 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:06:32,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:06:32,035 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:06:32,035 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:06:32,035 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:06:32,036 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:06:32,037 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:06:32,037 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:06:32,038 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:06:32,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:06:32,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:06:32,041 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:06:32,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:06:32,042 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:06:32,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:06:32,042 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:06:32,042 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:32,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:06:32,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:06:32,043 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:06:32,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:06:32,044 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:06:32,044 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:06:32,044 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:06:32,045 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:06:32,045 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:06:32,045 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:06:32,046 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:06:32,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:06:32,046 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:06:32,047 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:06:32,047 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:06:32,047 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:06:32,047 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:06:32,048 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:06:32,048 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:06:32,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:06:32,048 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:06:32,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:06:32,049 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:06:32,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:06:32,049 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:06:32,050 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:06:32,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:06:32,052 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:06:32,052 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:06:32,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:06:32,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:32,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:32,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:32,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:06:32,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:06:32,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:06:32,054 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:06:32,054 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:06:32,055 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:06:32,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:06:32,055 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:06:32,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:06:32,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:06:32,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:06:32,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:06:32,056 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:06:32,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:06:32,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:06:32,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:06:32,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:06:32,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:06:32,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:06:32,059 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:06:32,059 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:06:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:06:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:06:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:06:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:06:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:06:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:06:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:06:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:06:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:06:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:06:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:06:32,064 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:06:32,065 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:06:32,065 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:06:32,065 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:06:32,065 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:06:32,066 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:06:32,066 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:06:32,066 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:06:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:06:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:06:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:06:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:06:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:06:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:06:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:06:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:06:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:06:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 03:06:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:06:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:06:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:06:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:06:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:06:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:06:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:06:32,072 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:06:32,072 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:06:32,072 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:06:32,072 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:06:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:06:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:06:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:06:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:06:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:06:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:06:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:06:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:06:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:06:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:06:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 03:06:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:06:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:06:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:06:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:06:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:06:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:06:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:06:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 03:06:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:06:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:06:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:06:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:06:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:06:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:06:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:06:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:06:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:06:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:06:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:06:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:06:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:06:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:06:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:06:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:06:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:06:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:06:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:38,338 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:38,339 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:38,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:38 BoogieIcfgContainer [2019-10-15 03:06:38,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:38,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:38,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:38,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:38,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:30" (1/3) ... [2019-10-15 03:06:38,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2916d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:38, skipping insertion in model container [2019-10-15 03:06:38,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:31" (2/3) ... [2019-10-15 03:06:38,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2916d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:38, skipping insertion in model container [2019-10-15 03:06:38,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:38" (3/3) ... [2019-10-15 03:06:38,351 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2019-10-15 03:06:38,361 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:38,371 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:38,382 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:38,414 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:38,414 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:38,414 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:38,414 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:38,415 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:38,415 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:38,415 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:38,415 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states. [2019-10-15 03:06:38,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 03:06:38,479 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:38,480 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:38,483 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:38,490 INFO L82 PathProgramCache]: Analyzing trace with hash -40033435, now seen corresponding path program 1 times [2019-10-15 03:06:38,500 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:38,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879025145] [2019-10-15 03:06:38,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:06:39,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879025145] [2019-10-15 03:06:39,440 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:39,440 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:06:39,441 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233033348] [2019-10-15 03:06:39,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:06:39,449 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:39,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:06:39,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:39,466 INFO L87 Difference]: Start difference. First operand 531 states. Second operand 8 states. [2019-10-15 03:06:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:39,673 INFO L93 Difference]: Finished difference Result 815 states and 1272 transitions. [2019-10-15 03:06:39,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:06:39,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-10-15 03:06:39,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:39,701 INFO L225 Difference]: With dead ends: 815 [2019-10-15 03:06:39,702 INFO L226 Difference]: Without dead ends: 445 [2019-10-15 03:06:39,717 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-15 03:06:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 410. [2019-10-15 03:06:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2019-10-15 03:06:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 617 transitions. [2019-10-15 03:06:39,841 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 617 transitions. Word has length 115 [2019-10-15 03:06:39,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:39,841 INFO L462 AbstractCegarLoop]: Abstraction has 410 states and 617 transitions. [2019-10-15 03:06:39,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:06:39,842 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 617 transitions. [2019-10-15 03:06:39,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:06:39,848 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:39,849 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:39,849 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:39,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:39,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1153139607, now seen corresponding path program 1 times [2019-10-15 03:06:39,850 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:39,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715962808] [2019-10-15 03:06:39,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:39,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:39,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:06:40,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715962808] [2019-10-15 03:06:40,219 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:40,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:40,220 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122439967] [2019-10-15 03:06:40,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:40,224 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:40,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:40,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:40,224 INFO L87 Difference]: Start difference. First operand 410 states and 617 transitions. Second operand 7 states. [2019-10-15 03:06:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:44,933 INFO L93 Difference]: Finished difference Result 1239 states and 1934 transitions. [2019-10-15 03:06:44,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 03:06:44,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-15 03:06:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:44,948 INFO L225 Difference]: With dead ends: 1239 [2019-10-15 03:06:44,948 INFO L226 Difference]: Without dead ends: 882 [2019-10-15 03:06:44,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:06:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2019-10-15 03:06:45,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 855. [2019-10-15 03:06:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2019-10-15 03:06:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1336 transitions. [2019-10-15 03:06:45,019 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1336 transitions. Word has length 120 [2019-10-15 03:06:45,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:45,020 INFO L462 AbstractCegarLoop]: Abstraction has 855 states and 1336 transitions. [2019-10-15 03:06:45,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:45,021 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1336 transitions. [2019-10-15 03:06:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:06:45,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:45,029 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:45,029 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:45,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:45,029 INFO L82 PathProgramCache]: Analyzing trace with hash -93620798, now seen corresponding path program 1 times [2019-10-15 03:06:45,030 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:45,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029651142] [2019-10-15 03:06:45,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:45,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:45,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:06:45,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029651142] [2019-10-15 03:06:45,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:45,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:45,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472997220] [2019-10-15 03:06:45,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:45,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:45,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:45,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:45,393 INFO L87 Difference]: Start difference. First operand 855 states and 1336 transitions. Second operand 5 states. [2019-10-15 03:06:45,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:45,515 INFO L93 Difference]: Finished difference Result 1349 states and 2122 transitions. [2019-10-15 03:06:45,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:45,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-10-15 03:06:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:45,524 INFO L225 Difference]: With dead ends: 1349 [2019-10-15 03:06:45,524 INFO L226 Difference]: Without dead ends: 877 [2019-10-15 03:06:45,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:45,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2019-10-15 03:06:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 867. [2019-10-15 03:06:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2019-10-15 03:06:45,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1351 transitions. [2019-10-15 03:06:45,586 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1351 transitions. Word has length 124 [2019-10-15 03:06:45,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:45,586 INFO L462 AbstractCegarLoop]: Abstraction has 867 states and 1351 transitions. [2019-10-15 03:06:45,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1351 transitions. [2019-10-15 03:06:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 03:06:45,591 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:45,591 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:45,592 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:45,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1097035034, now seen corresponding path program 1 times [2019-10-15 03:06:45,592 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:45,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890616449] [2019-10-15 03:06:45,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:45,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:45,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:06:45,909 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890616449] [2019-10-15 03:06:45,909 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:45,909 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:06:45,909 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88589013] [2019-10-15 03:06:45,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:06:45,910 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:45,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:06:45,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:45,911 INFO L87 Difference]: Start difference. First operand 867 states and 1351 transitions. Second operand 8 states. [2019-10-15 03:06:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:50,981 INFO L93 Difference]: Finished difference Result 1828 states and 2856 transitions. [2019-10-15 03:06:50,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:06:50,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-10-15 03:06:50,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:50,991 INFO L225 Difference]: With dead ends: 1828 [2019-10-15 03:06:50,991 INFO L226 Difference]: Without dead ends: 1248 [2019-10-15 03:06:50,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:06:50,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2019-10-15 03:06:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1198. [2019-10-15 03:06:51,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-10-15 03:06:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1828 transitions. [2019-10-15 03:06:51,070 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1828 transitions. Word has length 128 [2019-10-15 03:06:51,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:51,071 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1828 transitions. [2019-10-15 03:06:51,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:06:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1828 transitions. [2019-10-15 03:06:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:06:51,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:51,075 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:51,076 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:51,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1289851637, now seen corresponding path program 1 times [2019-10-15 03:06:51,076 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:51,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544448141] [2019-10-15 03:06:51,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:51,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:51,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:06:51,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544448141] [2019-10-15 03:06:51,308 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:51,308 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:51,308 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123592180] [2019-10-15 03:06:51,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:51,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:51,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:51,310 INFO L87 Difference]: Start difference. First operand 1198 states and 1828 transitions. Second operand 7 states. [2019-10-15 03:06:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:51,542 INFO L93 Difference]: Finished difference Result 2253 states and 3521 transitions. [2019-10-15 03:06:51,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:06:51,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-15 03:06:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:51,554 INFO L225 Difference]: With dead ends: 2253 [2019-10-15 03:06:51,554 INFO L226 Difference]: Without dead ends: 1198 [2019-10-15 03:06:51,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2019-10-15 03:06:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1198. [2019-10-15 03:06:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-10-15 03:06:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1796 transitions. [2019-10-15 03:06:51,622 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1796 transitions. Word has length 131 [2019-10-15 03:06:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:51,623 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1796 transitions. [2019-10-15 03:06:51,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1796 transitions. [2019-10-15 03:06:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:06:51,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:51,626 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:51,627 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:51,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1713093847, now seen corresponding path program 1 times [2019-10-15 03:06:51,628 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:51,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179814664] [2019-10-15 03:06:51,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:51,629 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:51,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:06:51,866 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179814664] [2019-10-15 03:06:51,867 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:51,867 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:51,867 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490140907] [2019-10-15 03:06:51,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:51,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:51,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:51,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:51,872 INFO L87 Difference]: Start difference. First operand 1198 states and 1796 transitions. Second operand 7 states. [2019-10-15 03:06:55,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:55,862 INFO L93 Difference]: Finished difference Result 2122 states and 3191 transitions. [2019-10-15 03:06:55,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:06:55,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-15 03:06:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:55,871 INFO L225 Difference]: With dead ends: 2122 [2019-10-15 03:06:55,871 INFO L226 Difference]: Without dead ends: 1268 [2019-10-15 03:06:55,877 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:55,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2019-10-15 03:06:55,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1225. [2019-10-15 03:06:55,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2019-10-15 03:06:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1830 transitions. [2019-10-15 03:06:55,942 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1830 transitions. Word has length 133 [2019-10-15 03:06:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:55,944 INFO L462 AbstractCegarLoop]: Abstraction has 1225 states and 1830 transitions. [2019-10-15 03:06:55,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1830 transitions. [2019-10-15 03:06:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 03:06:55,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:55,947 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:55,948 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:55,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1455499114, now seen corresponding path program 1 times [2019-10-15 03:06:55,948 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:55,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070454005] [2019-10-15 03:06:55,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:55,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:55,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:06:57,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070454005] [2019-10-15 03:06:57,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351101419] [2019-10-15 03:06:57,241 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 [2019-10-15 03:06:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:57,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:06:57,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:58,116 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:58,779 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:58,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [26] total 33 [2019-10-15 03:06:58,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514591687] [2019-10-15 03:06:58,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:06:58,780 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:58,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:06:58,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 03:06:58,781 INFO L87 Difference]: Start difference. First operand 1225 states and 1830 transitions. Second operand 9 states. [2019-10-15 03:07:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:00,579 INFO L93 Difference]: Finished difference Result 1299 states and 1944 transitions. [2019-10-15 03:07:00,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:07:00,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-10-15 03:07:00,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:00,588 INFO L225 Difference]: With dead ends: 1299 [2019-10-15 03:07:00,589 INFO L226 Difference]: Without dead ends: 1282 [2019-10-15 03:07:00,593 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:07:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-10-15 03:07:00,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1252. [2019-10-15 03:07:00,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2019-10-15 03:07:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1869 transitions. [2019-10-15 03:07:00,671 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1869 transitions. Word has length 137 [2019-10-15 03:07:00,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:00,672 INFO L462 AbstractCegarLoop]: Abstraction has 1252 states and 1869 transitions. [2019-10-15 03:07:00,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:07:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1869 transitions. [2019-10-15 03:07:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 03:07:00,675 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:00,675 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-10-15 03:07:00,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:00,884 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:00,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:00,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1169335007, now seen corresponding path program 1 times [2019-10-15 03:07:00,886 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:00,886 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845923407] [2019-10-15 03:07:00,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:00,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:00,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:07:01,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845923407] [2019-10-15 03:07:01,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:07:01,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:07:01,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112119717] [2019-10-15 03:07:01,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:07:01,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:01,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:07:01,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:01,372 INFO L87 Difference]: Start difference. First operand 1252 states and 1869 transitions. Second operand 8 states. [2019-10-15 03:07:01,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:01,591 INFO L93 Difference]: Finished difference Result 1269 states and 1889 transitions. [2019-10-15 03:07:01,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:07:01,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2019-10-15 03:07:01,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:01,608 INFO L225 Difference]: With dead ends: 1269 [2019-10-15 03:07:01,608 INFO L226 Difference]: Without dead ends: 1252 [2019-10-15 03:07:01,611 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:07:01,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2019-10-15 03:07:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2019-10-15 03:07:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2019-10-15 03:07:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1864 transitions. [2019-10-15 03:07:01,704 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1864 transitions. Word has length 142 [2019-10-15 03:07:01,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:01,705 INFO L462 AbstractCegarLoop]: Abstraction has 1252 states and 1864 transitions. [2019-10-15 03:07:01,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:07:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1864 transitions. [2019-10-15 03:07:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 03:07:01,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:01,718 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:01,718 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:01,719 INFO L82 PathProgramCache]: Analyzing trace with hash -327896423, now seen corresponding path program 1 times [2019-10-15 03:07:01,719 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:01,721 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212088689] [2019-10-15 03:07:01,721 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:01,721 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:01,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:07:02,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212088689] [2019-10-15 03:07:02,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59053812] [2019-10-15 03:07:02,763 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 [2019-10-15 03:07:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:03,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 3240 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 03:07:03,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:07:03,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:07:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:07:03,718 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:07:04,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:07:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:07:04,492 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:07:04,492 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [26] total 31 [2019-10-15 03:07:04,492 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462680937] [2019-10-15 03:07:04,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:07:04,493 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:04,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:07:04,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2019-10-15 03:07:04,494 INFO L87 Difference]: Start difference. First operand 1252 states and 1864 transitions. Second operand 7 states. [2019-10-15 03:07:04,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:04,647 INFO L93 Difference]: Finished difference Result 1293 states and 1915 transitions. [2019-10-15 03:07:04,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:07:04,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2019-10-15 03:07:04,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:04,655 INFO L225 Difference]: With dead ends: 1293 [2019-10-15 03:07:04,655 INFO L226 Difference]: Without dead ends: 1276 [2019-10-15 03:07:04,657 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2019-10-15 03:07:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2019-10-15 03:07:04,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1274. [2019-10-15 03:07:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1274 states. [2019-10-15 03:07:04,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1888 transitions. [2019-10-15 03:07:04,715 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1888 transitions. Word has length 157 [2019-10-15 03:07:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:04,716 INFO L462 AbstractCegarLoop]: Abstraction has 1274 states and 1888 transitions. [2019-10-15 03:07:04,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:07:04,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1888 transitions. [2019-10-15 03:07:04,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 03:07:04,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:04,721 INFO L380 BasicCegarLoop]: trace histogram [7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:04,930 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:04,930 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:04,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:04,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1251866636, now seen corresponding path program 1 times [2019-10-15 03:07:04,931 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:04,931 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066408822] [2019-10-15 03:07:04,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:04,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:04,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:07:05,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066408822] [2019-10-15 03:07:05,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327372774] [2019-10-15 03:07:05,396 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 [2019-10-15 03:07:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:06,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 03:07:06,203 INFO L279 TraceCheckSpWp]: Computing forward predicates...