/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:41:53,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:41:53,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:41:53,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:41:53,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:41:53,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:41:53,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:41:53,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:41:53,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:41:53,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:41:53,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:41:53,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:41:53,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:41:53,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:41:53,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:41:53,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:41:53,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:41:53,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:41:53,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:41:53,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:41:53,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:41:53,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:41:53,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:41:53,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:41:53,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:41:53,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:41:53,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:41:53,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:41:53,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:41:53,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:41:53,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:41:53,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:41:53,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:41:53,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:41:53,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:41:53,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:41:53,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:41:53,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:41:53,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:41:53,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:41:53,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:41:53,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 17:41:53,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:41:53,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:41:53,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:41:53,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:41:53,365 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:41:53,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:41:53,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:41:53,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:41:53,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:41:53,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:41:53,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:41:53,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:41:53,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:41:53,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:41:53,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:41:53,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:41:53,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:41:53,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:41:53,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:41:53,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:41:53,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:41:53,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:41:53,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:41:53,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:41:53,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:41:53,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:41:53,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:41:53,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:41:53,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:41:53,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:41:53,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:41:53,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:41:53,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:41:53,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:41:53,732 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:41:53,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-18 17:41:53,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e461bd3fc/c3b28acca9bb478ab4674ba412e7daed/FLAGf51797f69 [2020-08-18 17:41:54,331 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:41:54,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-18 17:41:54,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e461bd3fc/c3b28acca9bb478ab4674ba412e7daed/FLAGf51797f69 [2020-08-18 17:41:54,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e461bd3fc/c3b28acca9bb478ab4674ba412e7daed [2020-08-18 17:41:54,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:41:54,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:41:54,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:41:54,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:41:54,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:41:54,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:41:54" (1/1) ... [2020-08-18 17:41:54,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:54, skipping insertion in model container [2020-08-18 17:41:54,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:41:54" (1/1) ... [2020-08-18 17:41:54,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:41:54,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:41:55,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:41:55,143 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:41:55,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:41:55,404 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:41:55,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55 WrapperNode [2020-08-18 17:41:55,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:41:55,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:41:55,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:41:55,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:41:55,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55" (1/1) ... [2020-08-18 17:41:55,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55" (1/1) ... [2020-08-18 17:41:55,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55" (1/1) ... [2020-08-18 17:41:55,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55" (1/1) ... [2020-08-18 17:41:55,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55" (1/1) ... [2020-08-18 17:41:55,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55" (1/1) ... [2020-08-18 17:41:55,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55" (1/1) ... [2020-08-18 17:41:55,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:41:55,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:41:55,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:41:55,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:41:55,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 17:41:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:41:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:41:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:41:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:41:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:41:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:41:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:41:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:41:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:41:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:41:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:41:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:41:55,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 17:41:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 17:41:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:41:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:41:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:41:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:41:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:41:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:41:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:41:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 17:41:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:41:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:41:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:41:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:41:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:41:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:41:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:41:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:41:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:41:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:41:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 17:41:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 17:41:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:41:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:41:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:41:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:41:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:41:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:41:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:41:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:41:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:41:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:41:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:41:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:41:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:41:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:41:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:41:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:41:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:41:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:41:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:41:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:41:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:41:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:41:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 17:41:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:41:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:41:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:41:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:41:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:41:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:41:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 17:41:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:41:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:41:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:41:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:41:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 17:41:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:41:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:41:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:41:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 17:41:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:41:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:41:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:41:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:41:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 17:41:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:41:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:41:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:41:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:41:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:41:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:41:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:41:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:41:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:41:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:41:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:41:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:41:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:41:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:41:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:41:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:41:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:41:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:41:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:41:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:41:56,772 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:41:56,772 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:41:56,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:41:56 BoogieIcfgContainer [2020-08-18 17:41:56,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:41:56,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:41:56,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:41:56,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:41:56,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:41:54" (1/3) ... [2020-08-18 17:41:56,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acac843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:41:56, skipping insertion in model container [2020-08-18 17:41:56,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:55" (2/3) ... [2020-08-18 17:41:56,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acac843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:41:56, skipping insertion in model container [2020-08-18 17:41:56,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:41:56" (3/3) ... [2020-08-18 17:41:56,795 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2020-08-18 17:41:56,806 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:41:56,817 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:41:56,833 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:41:56,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:41:56,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:41:56,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:41:56,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:41:56,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:41:56,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:41:56,865 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:41:56,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:41:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-18 17:41:56,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 17:41:56,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:56,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:41:56,898 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:56,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2020-08-18 17:41:56,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:56,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100827178] [2020-08-18 17:41:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:57,539 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:57,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:57,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:57,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:57,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:41:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:57,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:41:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:41:57,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100827178] [2020-08-18 17:41:57,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:57,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:41:57,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809285686] [2020-08-18 17:41:57,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:41:57,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:57,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:41:57,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:41:57,677 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2020-08-18 17:41:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:58,858 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2020-08-18 17:41:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:41:58,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 17:41:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:58,876 INFO L225 Difference]: With dead ends: 306 [2020-08-18 17:41:58,876 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 17:41:58,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:41:58,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 17:41:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2020-08-18 17:41:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-18 17:41:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-18 17:41:58,999 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2020-08-18 17:41:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:59,000 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-18 17:41:59,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:41:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-18 17:41:59,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 17:41:59,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:59,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:41:59,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:41:59,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:59,012 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2020-08-18 17:41:59,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:59,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873553130] [2020-08-18 17:41:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:59,434 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:59,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:59,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:59,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:41:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:59,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:41:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:41:59,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873553130] [2020-08-18 17:41:59,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:59,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:41:59,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969497405] [2020-08-18 17:41:59,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:41:59,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:59,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:41:59,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:41:59,516 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 5 states. [2020-08-18 17:42:00,056 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:01,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:01,026 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2020-08-18 17:42:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:42:01,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 17:42:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:01,031 INFO L225 Difference]: With dead ends: 247 [2020-08-18 17:42:01,031 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 17:42:01,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:42:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 17:42:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-18 17:42:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 17:42:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-18 17:42:01,070 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2020-08-18 17:42:01,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:01,070 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-18 17:42:01,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:42:01,070 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-18 17:42:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 17:42:01,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:01,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:42:01,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:42:01,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:01,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:01,073 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2020-08-18 17:42:01,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:01,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572070468] [2020-08-18 17:42:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:01,435 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:01,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:42:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:01,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:42:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:42:01,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572070468] [2020-08-18 17:42:01,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:42:01,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:42:01,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132773433] [2020-08-18 17:42:01,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:42:01,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:01,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:42:01,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:42:01,533 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 9 states. [2020-08-18 17:42:01,900 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:02,202 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:02,487 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:02,714 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:03,896 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2020-08-18 17:42:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:42:03,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 17:42:03,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:03,900 INFO L225 Difference]: With dead ends: 260 [2020-08-18 17:42:03,900 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 17:42:03,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:42:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 17:42:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-18 17:42:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 17:42:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-18 17:42:03,940 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2020-08-18 17:42:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:03,941 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-18 17:42:03,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:42:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-18 17:42:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 17:42:03,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:03,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:42:03,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:42:03,943 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:03,944 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2020-08-18 17:42:03,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:03,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836238075] [2020-08-18 17:42:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,205 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:04,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:42:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 17:42:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:42:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:42:04,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836238075] [2020-08-18 17:42:04,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:42:04,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:42:04,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976284640] [2020-08-18 17:42:04,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:42:04,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:04,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:42:04,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:42:04,292 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 7 states. [2020-08-18 17:42:04,668 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:05,955 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:06,648 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2020-08-18 17:42:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:42:06,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-18 17:42:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:06,653 INFO L225 Difference]: With dead ends: 359 [2020-08-18 17:42:06,653 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 17:42:06,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:42:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 17:42:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2020-08-18 17:42:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-18 17:42:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2020-08-18 17:42:06,706 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2020-08-18 17:42:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:06,707 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2020-08-18 17:42:06,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:42:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2020-08-18 17:42:06,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 17:42:06,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:06,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:42:06,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:42:06,709 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:06,710 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2020-08-18 17:42:06,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:06,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016537886] [2020-08-18 17:42:06,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:06,974 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:42:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 17:42:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 17:42:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:42:07,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016537886] [2020-08-18 17:42:07,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:42:07,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:42:07,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276215962] [2020-08-18 17:42:07,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:42:07,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:07,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:42:07,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:42:07,077 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2020-08-18 17:42:07,552 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:08,741 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:09,032 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:09,276 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:09,504 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:10,785 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2020-08-18 17:42:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 17:42:10,787 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 17:42:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:10,790 INFO L225 Difference]: With dead ends: 626 [2020-08-18 17:42:10,790 INFO L226 Difference]: Without dead ends: 444 [2020-08-18 17:42:10,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 17:42:10,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-08-18 17:42:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2020-08-18 17:42:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-18 17:42:10,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2020-08-18 17:42:10,879 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2020-08-18 17:42:10,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:10,880 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2020-08-18 17:42:10,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:42:10,880 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2020-08-18 17:42:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 17:42:10,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:10,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:42:10,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:42:10,882 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:10,882 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2020-08-18 17:42:10,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:10,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962715645] [2020-08-18 17:42:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,181 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:42:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:42:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 17:42:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 17:42:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:42:11,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962715645] [2020-08-18 17:42:11,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:42:11,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:42:11,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785703] [2020-08-18 17:42:11,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:42:11,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:11,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:42:11,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:42:11,333 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 10 states. [2020-08-18 17:42:11,701 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:12,845 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:13,069 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:13,303 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:13,559 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:14,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:14,488 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2020-08-18 17:42:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 17:42:14,489 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 17:42:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:14,494 INFO L225 Difference]: With dead ends: 822 [2020-08-18 17:42:14,494 INFO L226 Difference]: Without dead ends: 482 [2020-08-18 17:42:14,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 17:42:14,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-18 17:42:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2020-08-18 17:42:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-18 17:42:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-18 17:42:14,578 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2020-08-18 17:42:14,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:14,578 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-18 17:42:14,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:42:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-18 17:42:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 17:42:14,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:14,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:42:14,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:42:14,581 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:14,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:14,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2020-08-18 17:42:14,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:14,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069994007] [2020-08-18 17:42:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,815 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:14,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:42:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:42:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 17:42:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 17:42:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:42:14,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069994007] [2020-08-18 17:42:14,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:42:14,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:42:14,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179144947] [2020-08-18 17:42:14,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:42:14,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:14,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:42:15,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:42:15,001 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 10 states. [2020-08-18 17:42:16,143 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:16,417 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:42:16,657 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:16,888 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:17,995 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2020-08-18 17:42:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:42:17,996 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-18 17:42:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:18,000 INFO L225 Difference]: With dead ends: 825 [2020-08-18 17:42:18,001 INFO L226 Difference]: Without dead ends: 486 [2020-08-18 17:42:18,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:42:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-18 17:42:18,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2020-08-18 17:42:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-08-18 17:42:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2020-08-18 17:42:18,105 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2020-08-18 17:42:18,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:18,105 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2020-08-18 17:42:18,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:42:18,105 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2020-08-18 17:42:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 17:42:18,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:18,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:42:18,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:42:18,108 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:18,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2020-08-18 17:42:18,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:18,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256360573] [2020-08-18 17:42:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,363 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:42:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:42:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 17:42:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 17:42:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:42:18,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256360573] [2020-08-18 17:42:18,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:42:18,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 17:42:18,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468020475] [2020-08-18 17:42:18,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:42:18,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:18,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:42:18,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:42:18,537 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 12 states. [2020-08-18 17:42:19,086 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:19,320 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:19,541 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:20,217 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:20,466 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:20,701 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:21,978 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2020-08-18 17:42:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:42:21,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-18 17:42:21,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:21,983 INFO L225 Difference]: With dead ends: 849 [2020-08-18 17:42:21,983 INFO L226 Difference]: Without dead ends: 500 [2020-08-18 17:42:21,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 17:42:21,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-18 17:42:22,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-18 17:42:22,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 17:42:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2020-08-18 17:42:22,054 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2020-08-18 17:42:22,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:22,055 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2020-08-18 17:42:22,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:42:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2020-08-18 17:42:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 17:42:22,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:22,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:42:22,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:42:22,057 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2020-08-18 17:42:22,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:22,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589442280] [2020-08-18 17:42:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,398 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:22,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:42:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:42:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 17:42:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 17:42:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:42:22,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589442280] [2020-08-18 17:42:22,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:42:22,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:42:22,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382680379] [2020-08-18 17:42:22,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:42:22,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:22,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:42:22,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:42:22,611 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 8 states. [2020-08-18 17:42:23,179 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:23,961 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:26,373 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2020-08-18 17:42:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 17:42:26,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-18 17:42:26,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:26,380 INFO L225 Difference]: With dead ends: 1197 [2020-08-18 17:42:26,380 INFO L226 Difference]: Without dead ends: 840 [2020-08-18 17:42:26,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 17:42:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-08-18 17:42:26,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2020-08-18 17:42:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-08-18 17:42:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2020-08-18 17:42:26,505 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2020-08-18 17:42:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:26,505 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2020-08-18 17:42:26,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:42:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2020-08-18 17:42:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 17:42:26,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:26,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:42:26,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:42:26,508 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2020-08-18 17:42:26,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:26,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49198870] [2020-08-18 17:42:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,772 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:26,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:42:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:42:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:42:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 17:42:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 17:42:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:42:26,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49198870] [2020-08-18 17:42:26,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:42:26,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:42:26,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609653841] [2020-08-18 17:42:26,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:42:26,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:26,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:42:26,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:42:26,887 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand 8 states. [2020-08-18 17:42:27,300 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:29,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:29,871 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2020-08-18 17:42:29,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 17:42:29,872 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 17:42:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:29,881 INFO L225 Difference]: With dead ends: 1377 [2020-08-18 17:42:29,881 INFO L226 Difference]: Without dead ends: 1374 [2020-08-18 17:42:29,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 17:42:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-08-18 17:42:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2020-08-18 17:42:30,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-08-18 17:42:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2020-08-18 17:42:30,070 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2020-08-18 17:42:30,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:30,070 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2020-08-18 17:42:30,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:42:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2020-08-18 17:42:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 17:42:30,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:30,075 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-08-18 17:42:30,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:42:30,076 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2020-08-18 17:42:30,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:30,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036989038] [2020-08-18 17:42:30,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,341 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:42:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:42:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 17:42:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:42:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:42:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 17:42:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 17:42:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 17:42:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 17:42:30,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036989038] [2020-08-18 17:42:30,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:42:30,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 17:42:30,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550482877] [2020-08-18 17:42:30,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 17:42:30,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:30,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 17:42:30,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 17:42:30,610 INFO L87 Difference]: Start difference. First operand 1147 states and 1356 transitions. Second operand 13 states. [2020-08-18 17:42:31,478 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:31,757 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:31,984 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:33,002 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:35,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:35,015 INFO L93 Difference]: Finished difference Result 2071 states and 2568 transitions. [2020-08-18 17:42:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 17:42:35,016 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 17:42:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:35,026 INFO L225 Difference]: With dead ends: 2071 [2020-08-18 17:42:35,027 INFO L226 Difference]: Without dead ends: 1084 [2020-08-18 17:42:35,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 17:42:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-08-18 17:42:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 948. [2020-08-18 17:42:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-18 17:42:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1106 transitions. [2020-08-18 17:42:35,281 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1106 transitions. Word has length 152 [2020-08-18 17:42:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:35,284 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1106 transitions. [2020-08-18 17:42:35,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 17:42:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1106 transitions. [2020-08-18 17:42:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 17:42:35,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:35,291 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-08-18 17:42:35,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:42:35,292 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:35,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1764550393, now seen corresponding path program 1 times [2020-08-18 17:42:35,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:35,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778360848] [2020-08-18 17:42:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,656 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:42:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:42:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 17:42:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:42:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:42:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 17:42:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 17:42:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:42:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 17:42:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 17:42:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-18 17:42:35,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778360848] [2020-08-18 17:42:35,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:42:35,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 17:42:35,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296915491] [2020-08-18 17:42:35,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 17:42:35,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:35,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 17:42:35,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:42:35,981 INFO L87 Difference]: Start difference. First operand 948 states and 1106 transitions. Second operand 15 states. [2020-08-18 17:42:36,609 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:37,783 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:39,915 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 17:42:40,370 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 17:42:40,819 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 17:42:41,790 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 17:42:42,068 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:42:42,326 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:42:42,570 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:42:44,237 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 17:42:45,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:45,314 INFO L93 Difference]: Finished difference Result 3031 states and 3876 transitions. [2020-08-18 17:42:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-08-18 17:42:45,315 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 154 [2020-08-18 17:42:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:45,329 INFO L225 Difference]: With dead ends: 3031 [2020-08-18 17:42:45,329 INFO L226 Difference]: Without dead ends: 2243 [2020-08-18 17:42:45,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2020-08-18 17:42:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-08-18 17:42:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1920. [2020-08-18 17:42:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-08-18 17:42:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2261 transitions. [2020-08-18 17:42:45,750 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2261 transitions. Word has length 154 [2020-08-18 17:42:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:45,751 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2261 transitions. [2020-08-18 17:42:45,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 17:42:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2261 transitions. [2020-08-18 17:42:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 17:42:45,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:42:45,755 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-08-18 17:42:45,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 17:42:45,756 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:42:45,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:42:45,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1836936951, now seen corresponding path program 1 times [2020-08-18 17:42:45,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:42:45,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859133891] [2020-08-18 17:42:45,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:42:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,046 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:42:46,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:42:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:42:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:42:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:42:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:42:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:42:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:42:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:42:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 17:42:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:42:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:42:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:42:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 17:42:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 17:42:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:42:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:42:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:42:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 17:42:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 17:42:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:42:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-18 17:42:46,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859133891] [2020-08-18 17:42:46,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:42:46,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 17:42:46,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259363484] [2020-08-18 17:42:46,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 17:42:46,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:42:46,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 17:42:46,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:42:46,348 INFO L87 Difference]: Start difference. First operand 1920 states and 2261 transitions. Second operand 15 states. [2020-08-18 17:42:47,137 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:47,393 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:47,643 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:49,485 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:42:49,742 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:42:50,028 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:50,274 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:42:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:42:50,716 INFO L93 Difference]: Finished difference Result 2728 states and 3289 transitions. [2020-08-18 17:42:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 17:42:50,721 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 154 [2020-08-18 17:42:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:42:50,723 INFO L225 Difference]: With dead ends: 2728 [2020-08-18 17:42:50,723 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 17:42:50,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2020-08-18 17:42:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 17:42:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 17:42:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 17:42:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 17:42:50,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2020-08-18 17:42:50,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:42:50,732 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 17:42:50,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 17:42:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 17:42:50,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 17:42:50,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 17:42:50,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.