/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:23:15,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:23:15,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:23:15,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:23:15,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:23:15,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:23:15,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:23:15,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:23:15,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:23:15,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:23:15,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:23:15,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:23:15,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:23:15,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:23:15,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:23:15,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:23:15,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:23:15,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:23:15,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:23:15,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:23:15,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:23:15,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:23:15,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:23:15,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:23:15,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:23:15,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:23:15,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:23:15,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:23:15,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:23:15,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:23:15,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:23:15,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:23:15,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:23:15,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:23:15,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:23:15,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:23:15,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:23:15,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:23:15,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:23:15,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:23:15,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:23:15,356 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 [2020-08-19 03:23:15,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:23:15,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:23:15,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:23:15,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:23:15,384 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:23:15,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:23:15,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:23:15,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:23:15,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:23:15,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:23:15,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:23:15,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:23:15,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:23:15,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:23:15,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:23:15,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:23:15,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:23:15,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:23:15,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:23:15,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:23:15,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:23:15,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:23:15,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:23:15,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:23:15,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:23:15,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:23:15,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:23:15,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:23:15,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:23:15,395 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:23:15,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:23:15,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:23:15,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:23:15,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:23:15,745 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:23:15,746 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-19 03:23:15,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0e4a07f2/e1ae0fa8bbb24aa4b80d631c1fa61872/FLAG6c12a5bb0 [2020-08-19 03:23:16,365 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:23:16,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-19 03:23:16,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0e4a07f2/e1ae0fa8bbb24aa4b80d631c1fa61872/FLAG6c12a5bb0 [2020-08-19 03:23:16,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d0e4a07f2/e1ae0fa8bbb24aa4b80d631c1fa61872 [2020-08-19 03:23:16,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:23:16,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:23:16,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:23:16,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:23:16,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:23:16,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:23:16" (1/1) ... [2020-08-19 03:23:16,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43518757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:16, skipping insertion in model container [2020-08-19 03:23:16,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:23:16" (1/1) ... [2020-08-19 03:23:16,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:23:16,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:23:17,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:23:17,224 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:23:17,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:23:17,404 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:23:17,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17 WrapperNode [2020-08-19 03:23:17,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:23:17,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:23:17,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:23:17,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:23:17,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17" (1/1) ... [2020-08-19 03:23:17,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17" (1/1) ... [2020-08-19 03:23:17,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17" (1/1) ... [2020-08-19 03:23:17,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17" (1/1) ... [2020-08-19 03:23:17,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17" (1/1) ... [2020-08-19 03:23:17,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17" (1/1) ... [2020-08-19 03:23:17,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17" (1/1) ... [2020-08-19 03:23:17,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:23:17,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:23:17,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:23:17,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:23:17,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17" (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 [2020-08-19 03:23:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:23:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:23:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:23:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:23:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:23:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:23:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:23:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:23:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:23:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:23:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:23:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:23:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:23:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:23:17,642 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 03:23:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:23:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:23:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:23:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:23:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:23:17,647 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:23:17,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:23:17,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 03:23:17,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:23:17,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:23:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:23:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:23:17,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:23:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:23:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:23:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:23:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:23:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:23:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:23:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:23:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:23:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:23:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 03:23:17,651 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:23:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:23:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:23:17,652 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:23:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:23:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:23:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:23:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:23:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:23:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:23:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:23:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:23:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:23:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:23:17,655 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:23:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:23:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:23:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:23:17,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:23:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:23:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:23:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:23:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:23:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:23:17,657 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:23:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:23:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:23:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:23:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:23:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:23:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:23:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:23:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:23:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:23:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 03:23:17,660 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:23:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:23:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:23:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:23:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:23:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:23:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:23:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:23:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:23:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 03:23:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 03:23:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:23:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:23:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:23:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:23:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:23:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:23:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:23:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:23:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:23:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:23:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:23:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:23:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:23:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:23:20,863 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:23:20,864 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:23:20,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:23:20 BoogieIcfgContainer [2020-08-19 03:23:20,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:23:20,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:23:20,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:23:20,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:23:20,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:23:16" (1/3) ... [2020-08-19 03:23:20,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fdaabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:23:20, skipping insertion in model container [2020-08-19 03:23:20,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:17" (2/3) ... [2020-08-19 03:23:20,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fdaabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:23:20, skipping insertion in model container [2020-08-19 03:23:20,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:23:20" (3/3) ... [2020-08-19 03:23:20,878 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2020-08-19 03:23:20,888 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:23:20,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:23:20,911 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:23:20,938 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:23:20,938 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:23:20,938 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:23:20,939 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:23:20,939 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:23:20,939 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:23:20,939 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:23:20,939 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:23:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-19 03:23:20,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:23:20,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:20,976 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] [2020-08-19 03:23:20,976 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:20,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:20,983 INFO L82 PathProgramCache]: Analyzing trace with hash 805370938, now seen corresponding path program 1 times [2020-08-19 03:23:20,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:20,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290481252] [2020-08-19 03:23:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:21,697 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:21,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:21,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:23:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:23:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:21,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290481252] [2020-08-19 03:23:21,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:21,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:23:21,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244180015] [2020-08-19 03:23:21,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:23:21,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:21,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:23:21,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:23:21,904 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-19 03:23:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:23,235 INFO L93 Difference]: Finished difference Result 328 states and 428 transitions. [2020-08-19 03:23:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:23:23,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 03:23:23,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:23,252 INFO L225 Difference]: With dead ends: 328 [2020-08-19 03:23:23,252 INFO L226 Difference]: Without dead ends: 181 [2020-08-19 03:23:23,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:23:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-19 03:23:23,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-19 03:23:23,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-19 03:23:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2020-08-19 03:23:23,354 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 51 [2020-08-19 03:23:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:23,355 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2020-08-19 03:23:23,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:23:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2020-08-19 03:23:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:23:23,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:23,359 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] [2020-08-19 03:23:23,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:23:23,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:23,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:23,360 INFO L82 PathProgramCache]: Analyzing trace with hash -239223915, now seen corresponding path program 1 times [2020-08-19 03:23:23,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:23,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287334864] [2020-08-19 03:23:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:23,689 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:23,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:23,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:23,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:23,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:23:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:23,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:23:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:23,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287334864] [2020-08-19 03:23:23,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:23,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:23:23,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608074177] [2020-08-19 03:23:23,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:23:23,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:23,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:23:23,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:23:23,755 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand 5 states. [2020-08-19 03:23:24,260 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:25,207 INFO L93 Difference]: Finished difference Result 273 states and 339 transitions. [2020-08-19 03:23:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:23:25,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 03:23:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:25,212 INFO L225 Difference]: With dead ends: 273 [2020-08-19 03:23:25,212 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 03:23:25,214 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 [2020-08-19 03:23:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 03:23:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-19 03:23:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 03:23:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-19 03:23:25,251 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-08-19 03:23:25,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:25,251 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-19 03:23:25,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:23:25,252 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-19 03:23:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 03:23:25,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:25,254 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] [2020-08-19 03:23:25,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:23:25,255 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:25,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2031785454, now seen corresponding path program 1 times [2020-08-19 03:23:25,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:25,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807526246] [2020-08-19 03:23:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:25,597 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:25,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:25,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:23:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:23:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:25,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807526246] [2020-08-19 03:23:25,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:25,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:23:25,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653818223] [2020-08-19 03:23:25,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:23:25,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:25,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:23:25,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:23:25,685 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 9 states. [2020-08-19 03:23:26,130 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:26,481 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:26,740 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:26,984 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:28,368 INFO L93 Difference]: Finished difference Result 282 states and 354 transitions. [2020-08-19 03:23:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:23:28,368 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 03:23:28,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:28,375 INFO L225 Difference]: With dead ends: 282 [2020-08-19 03:23:28,376 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 03:23:28,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:23:28,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 03:23:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-19 03:23:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 03:23:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2020-08-19 03:23:28,426 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 56 [2020-08-19 03:23:28,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:28,429 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2020-08-19 03:23:28,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:23:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2020-08-19 03:23:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 03:23:28,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:28,435 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] [2020-08-19 03:23:28,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:23:28,435 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:28,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1519881096, now seen corresponding path program 1 times [2020-08-19 03:23:28,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:28,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864563766] [2020-08-19 03:23:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,781 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:23:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:23:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 03:23:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:28,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864563766] [2020-08-19 03:23:28,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:28,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:23:28,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115067510] [2020-08-19 03:23:28,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:23:28,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:28,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:23:28,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:23:28,912 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 7 states. [2020-08-19 03:23:29,350 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:30,563 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:31,330 INFO L93 Difference]: Finished difference Result 382 states and 483 transitions. [2020-08-19 03:23:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:23:31,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-19 03:23:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:31,334 INFO L225 Difference]: With dead ends: 382 [2020-08-19 03:23:31,334 INFO L226 Difference]: Without dead ends: 271 [2020-08-19 03:23:31,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:23:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-19 03:23:31,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 225. [2020-08-19 03:23:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-19 03:23:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 258 transitions. [2020-08-19 03:23:31,388 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 258 transitions. Word has length 74 [2020-08-19 03:23:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:31,389 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 258 transitions. [2020-08-19 03:23:31,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:23:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 258 transitions. [2020-08-19 03:23:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 03:23:31,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:31,391 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] [2020-08-19 03:23:31,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:23:31,391 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:31,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1815815577, now seen corresponding path program 1 times [2020-08-19 03:23:31,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:31,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782710900] [2020-08-19 03:23:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,707 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:31,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:23:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 03:23:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:23:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:31,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782710900] [2020-08-19 03:23:31,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:31,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:23:31,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017986667] [2020-08-19 03:23:31,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:23:31,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:31,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:23:31,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:23:31,852 INFO L87 Difference]: Start difference. First operand 225 states and 258 transitions. Second operand 9 states. [2020-08-19 03:23:32,326 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:33,545 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:33,810 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:34,047 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:34,264 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:35,703 INFO L93 Difference]: Finished difference Result 666 states and 830 transitions. [2020-08-19 03:23:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 03:23:35,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 03:23:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:35,710 INFO L225 Difference]: With dead ends: 666 [2020-08-19 03:23:35,710 INFO L226 Difference]: Without dead ends: 469 [2020-08-19 03:23:35,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 03:23:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-19 03:23:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 398. [2020-08-19 03:23:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-08-19 03:23:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 456 transitions. [2020-08-19 03:23:35,818 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 456 transitions. Word has length 88 [2020-08-19 03:23:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:35,819 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 456 transitions. [2020-08-19 03:23:35,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:23:35,819 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 456 transitions. [2020-08-19 03:23:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 03:23:35,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:35,821 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] [2020-08-19 03:23:35,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:23:35,822 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:35,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1743532533, now seen corresponding path program 1 times [2020-08-19 03:23:35,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:35,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415730772] [2020-08-19 03:23:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,103 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:23:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 03:23:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 03:23:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:36,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415730772] [2020-08-19 03:23:36,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:36,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:23:36,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432005075] [2020-08-19 03:23:36,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:23:36,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:36,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:23:36,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:23:36,255 INFO L87 Difference]: Start difference. First operand 398 states and 456 transitions. Second operand 10 states. [2020-08-19 03:23:37,035 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:38,167 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:38,389 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:38,676 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:38,962 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:40,257 INFO L93 Difference]: Finished difference Result 874 states and 1071 transitions. [2020-08-19 03:23:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:23:40,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-19 03:23:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:40,262 INFO L225 Difference]: With dead ends: 874 [2020-08-19 03:23:40,263 INFO L226 Difference]: Without dead ends: 504 [2020-08-19 03:23:40,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 03:23:40,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-08-19 03:23:40,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 397. [2020-08-19 03:23:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-19 03:23:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2020-08-19 03:23:40,333 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 92 [2020-08-19 03:23:40,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:40,334 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2020-08-19 03:23:40,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:23:40,334 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2020-08-19 03:23:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:23:40,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:40,336 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] [2020-08-19 03:23:40,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:23:40,336 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1672267508, now seen corresponding path program 1 times [2020-08-19 03:23:40,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:40,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447256767] [2020-08-19 03:23:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,602 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:23:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 03:23:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 03:23:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:40,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447256767] [2020-08-19 03:23:40,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:40,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:23:40,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446938574] [2020-08-19 03:23:40,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:23:40,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:40,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:23:40,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:23:40,773 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 10 states. [2020-08-19 03:23:41,816 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:42,055 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 03:23:42,290 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:42,539 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:43,761 INFO L93 Difference]: Finished difference Result 877 states and 1082 transitions. [2020-08-19 03:23:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 03:23:43,762 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-19 03:23:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:43,766 INFO L225 Difference]: With dead ends: 877 [2020-08-19 03:23:43,766 INFO L226 Difference]: Without dead ends: 508 [2020-08-19 03:23:43,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:23:43,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-19 03:23:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 407. [2020-08-19 03:23:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-19 03:23:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 463 transitions. [2020-08-19 03:23:43,833 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 463 transitions. Word has length 93 [2020-08-19 03:23:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:43,833 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 463 transitions. [2020-08-19 03:23:43,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:23:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 463 transitions. [2020-08-19 03:23:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:23:43,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:43,835 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] [2020-08-19 03:23:43,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:23:43,836 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1599880950, now seen corresponding path program 1 times [2020-08-19 03:23:43,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:43,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622284798] [2020-08-19 03:23:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,079 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:23:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 03:23:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 03:23:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:44,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622284798] [2020-08-19 03:23:44,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:44,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:23:44,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057269068] [2020-08-19 03:23:44,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:23:44,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:44,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:23:44,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:23:44,359 INFO L87 Difference]: Start difference. First operand 407 states and 463 transitions. Second operand 12 states. [2020-08-19 03:23:45,361 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:45,607 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:45,846 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:46,497 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:46,770 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:47,026 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:48,481 INFO L93 Difference]: Finished difference Result 901 states and 1126 transitions. [2020-08-19 03:23:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:23:48,482 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-19 03:23:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:48,485 INFO L225 Difference]: With dead ends: 901 [2020-08-19 03:23:48,485 INFO L226 Difference]: Without dead ends: 522 [2020-08-19 03:23:48,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:23:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-19 03:23:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 415. [2020-08-19 03:23:48,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-19 03:23:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 471 transitions. [2020-08-19 03:23:48,549 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 471 transitions. Word has length 93 [2020-08-19 03:23:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:48,550 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 471 transitions. [2020-08-19 03:23:48,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:23:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 471 transitions. [2020-08-19 03:23:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:23:48,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:48,552 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] [2020-08-19 03:23:48,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:23:48,552 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:48,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1929646711, now seen corresponding path program 1 times [2020-08-19 03:23:48,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:48,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123815576] [2020-08-19 03:23:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,816 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:23:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 03:23:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 03:23:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:48,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123815576] [2020-08-19 03:23:48,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:48,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:23:48,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77977796] [2020-08-19 03:23:48,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:23:48,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:48,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:23:48,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:23:48,983 INFO L87 Difference]: Start difference. First operand 415 states and 471 transitions. Second operand 8 states. [2020-08-19 03:23:49,612 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:50,177 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:52,914 INFO L93 Difference]: Finished difference Result 1240 states and 1603 transitions. [2020-08-19 03:23:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:23:52,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 03:23:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:52,921 INFO L225 Difference]: With dead ends: 1240 [2020-08-19 03:23:52,921 INFO L226 Difference]: Without dead ends: 853 [2020-08-19 03:23:52,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 03:23:52,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-19 03:23:53,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 721. [2020-08-19 03:23:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-08-19 03:23:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 849 transitions. [2020-08-19 03:23:53,092 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 849 transitions. Word has length 93 [2020-08-19 03:23:53,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:53,093 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 849 transitions. [2020-08-19 03:23:53,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:23:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 849 transitions. [2020-08-19 03:23:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 03:23:53,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:53,096 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, 1, 1, 1, 1] [2020-08-19 03:23:53,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:23:53,096 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:53,097 INFO L82 PathProgramCache]: Analyzing trace with hash 446997693, now seen corresponding path program 1 times [2020-08-19 03:23:53,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:53,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577759705] [2020-08-19 03:23:53,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,391 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:53,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:23:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:23:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:23:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 03:23:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 03:23:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:53,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577759705] [2020-08-19 03:23:53,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:53,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:23:53,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370105569] [2020-08-19 03:23:53,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:23:53,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:53,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:23:53,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:23:53,509 INFO L87 Difference]: Start difference. First operand 721 states and 849 transitions. Second operand 8 states. [2020-08-19 03:23:54,105 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:56,752 INFO L93 Difference]: Finished difference Result 1414 states and 1816 transitions. [2020-08-19 03:23:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:23:56,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-19 03:23:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:56,762 INFO L225 Difference]: With dead ends: 1414 [2020-08-19 03:23:56,762 INFO L226 Difference]: Without dead ends: 1411 [2020-08-19 03:23:56,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:23:56,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2020-08-19 03:23:56,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1213. [2020-08-19 03:23:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-08-19 03:23:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1442 transitions. [2020-08-19 03:23:56,997 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1442 transitions. Word has length 97 [2020-08-19 03:23:56,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:56,998 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1442 transitions. [2020-08-19 03:23:56,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:23:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1442 transitions. [2020-08-19 03:23:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-19 03:23:57,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:57,004 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, 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] [2020-08-19 03:23:57,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:23:57,004 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:57,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:57,004 INFO L82 PathProgramCache]: Analyzing trace with hash 350097324, now seen corresponding path program 1 times [2020-08-19 03:23:57,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:57,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909333197] [2020-08-19 03:23:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,269 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:57,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:23:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:23:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:23:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:23:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:23:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 03:23:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 03:23:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 03:23:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 03:23:57,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909333197] [2020-08-19 03:23:57,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:23:57,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 03:23:57,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440589271] [2020-08-19 03:23:57,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:23:57,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:57,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:23:57,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:23:57,556 INFO L87 Difference]: Start difference. First operand 1213 states and 1442 transitions. Second operand 13 states. [2020-08-19 03:23:58,270 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:58,508 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:58,742 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:59,724 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:01,593 INFO L93 Difference]: Finished difference Result 2164 states and 2684 transitions. [2020-08-19 03:24:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 03:24:01,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2020-08-19 03:24:01,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:01,604 INFO L225 Difference]: With dead ends: 2164 [2020-08-19 03:24:01,605 INFO L226 Difference]: Without dead ends: 1113 [2020-08-19 03:24:01,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-19 03:24:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-08-19 03:24:01,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 990. [2020-08-19 03:24:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-08-19 03:24:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1164 transitions. [2020-08-19 03:24:01,814 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1164 transitions. Word has length 160 [2020-08-19 03:24:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:01,814 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1164 transitions. [2020-08-19 03:24:01,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:24:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1164 transitions. [2020-08-19 03:24:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-19 03:24:01,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:01,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:01,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:24:01,819 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:01,819 INFO L82 PathProgramCache]: Analyzing trace with hash -524813042, now seen corresponding path program 1 times [2020-08-19 03:24:01,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:01,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115858067] [2020-08-19 03:24:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,184 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:24:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:24:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:24:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:24:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:24:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 03:24:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 03:24:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:24:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:24:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 03:24:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 03:24:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-19 03:24:02,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115858067] [2020-08-19 03:24:02,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:24:02,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 03:24:02,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316894035] [2020-08-19 03:24:02,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 03:24:02,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:02,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 03:24:02,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:24:02,566 INFO L87 Difference]: Start difference. First operand 990 states and 1164 transitions. Second operand 19 states. [2020-08-19 03:24:03,420 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:03,781 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:04,071 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:04,333 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:05,009 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:06,246 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:06,613 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:07,889 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:08,160 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:08,437 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:08,706 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:08,992 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:09,256 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:09,561 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:09,826 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:10,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:10,872 INFO L93 Difference]: Finished difference Result 1901 states and 2314 transitions. [2020-08-19 03:24:10,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 03:24:10,873 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 173 [2020-08-19 03:24:10,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:10,874 INFO L225 Difference]: With dead ends: 1901 [2020-08-19 03:24:10,874 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:24:10,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 03:24:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:24:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:24:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:24:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:24:10,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2020-08-19 03:24:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:10,883 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:24:10,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 03:24:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:24:10,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:24:10,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:24:10,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:24:13,605 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 332 DAG size of output: 294