/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:02:56,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:02:56,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:02:56,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:02:56,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:02:56,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:02:56,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:02:56,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:02:56,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:02:56,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:02:56,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:02:56,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:02:56,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:02:56,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:02:56,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:02:56,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:02:56,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:02:56,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:02:56,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:02:56,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:02:56,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:02:56,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:02:56,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:02:56,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:02:56,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:02:56,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:02:56,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:02:56,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:02:56,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:02:56,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:02:56,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:02:56,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:02:56,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:02:56,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:02:56,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:02:56,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:02:56,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:02:56,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:02:56,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:02:56,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:02:56,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:02:56,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:02:56,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:02:56,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:02:56,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:02:56,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:02:56,548 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:02:56,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:02:56,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:02:56,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:02:56,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:02:56,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:02:56,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:02:56,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:02:56,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:02:56,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:02:56,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:02:56,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:02:56,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:02:56,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:02:56,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:02:56,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:02:56,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:02:56,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:02:56,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:02:56,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:02:56,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:02:56,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:02:56,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:02:56,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:02:56,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:02:56,554 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 [2020-08-18 16:02:56,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:02:56,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:02:56,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:02:56,868 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:02:56,870 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:02:56,871 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2020-08-18 16:02:56,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41dac92ac/5c2065e7c10f46adb5072c0b96990d5c/FLAGdaccfa29b [2020-08-18 16:02:57,457 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:02:57,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2020-08-18 16:02:57,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41dac92ac/5c2065e7c10f46adb5072c0b96990d5c/FLAGdaccfa29b [2020-08-18 16:02:57,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41dac92ac/5c2065e7c10f46adb5072c0b96990d5c [2020-08-18 16:02:57,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:02:57,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:02:57,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:02:57,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:02:57,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:02:57,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:02:57" (1/1) ... [2020-08-18 16:02:57,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:57, skipping insertion in model container [2020-08-18 16:02:57,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:02:57" (1/1) ... [2020-08-18 16:02:57,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:02:57,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:02:58,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:02:58,374 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:02:58,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:02:58,484 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:02:58,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58 WrapperNode [2020-08-18 16:02:58,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:02:58,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:02:58,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:02:58,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:02:58,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58" (1/1) ... [2020-08-18 16:02:58,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58" (1/1) ... [2020-08-18 16:02:58,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58" (1/1) ... [2020-08-18 16:02:58,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58" (1/1) ... [2020-08-18 16:02:58,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58" (1/1) ... [2020-08-18 16:02:58,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58" (1/1) ... [2020-08-18 16:02:58,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58" (1/1) ... [2020-08-18 16:02:58,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:02:58,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:02:58,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:02:58,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:02:58,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:02:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:02:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:02:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:02:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:02:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:02:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:02:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:02:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:02:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:02:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:02:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:02:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:02:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:02:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:02:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:02:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:02:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:02:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:02:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:02:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:02:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:02:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:02:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:02:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:02:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:02:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:02:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:02:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:02:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:02:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:02:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:02:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:02:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:02:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:02:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:02:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:02:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:02:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:02:58,678 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:02:58,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:02:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:02:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:02:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:02:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 16:02:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:02:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:02:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:02:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:02:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:02:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:02:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:02:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:02:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:02:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:02:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:02:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:02:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:02:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:02:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:02:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:02:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:02:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:02:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:02:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:02:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:02:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:02:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:02:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:02:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:02:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:02:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:02:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:02:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:02:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:02:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:02:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:02:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:02:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:02:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:02:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:02:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:02:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:02:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:02:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:02:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:02:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:02:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:02:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:02:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:02:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:02:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:02:59,735 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:02:59,736 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:02:59,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:02:59 BoogieIcfgContainer [2020-08-18 16:02:59,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:02:59,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:02:59,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:02:59,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:02:59,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:02:57" (1/3) ... [2020-08-18 16:02:59,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97ace86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:02:59, skipping insertion in model container [2020-08-18 16:02:59,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:02:58" (2/3) ... [2020-08-18 16:02:59,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97ace86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:02:59, skipping insertion in model container [2020-08-18 16:02:59,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:02:59" (3/3) ... [2020-08-18 16:02:59,751 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product47.cil.c [2020-08-18 16:02:59,762 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:02:59,771 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:02:59,786 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:02:59,812 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:02:59,813 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:02:59,813 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:02:59,813 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:02:59,813 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:02:59,813 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:02:59,814 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:02:59,814 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:02:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-18 16:02:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:02:59,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:02:59,850 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] [2020-08-18 16:02:59,850 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:02:59,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:02:59,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1070296044, now seen corresponding path program 1 times [2020-08-18 16:02:59,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:02:59,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887563067] [2020-08-18 16:02:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:00,561 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:00,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:00,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:00,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:03:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:03:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:00,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887563067] [2020-08-18 16:03:00,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:00,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:03:00,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917228057] [2020-08-18 16:03:00,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:03:00,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:00,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:03:00,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:03:00,689 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2020-08-18 16:03:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:01,899 INFO L93 Difference]: Finished difference Result 317 states and 417 transitions. [2020-08-18 16:03:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:03:01,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:03:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:01,916 INFO L225 Difference]: With dead ends: 317 [2020-08-18 16:03:01,916 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 16:03:01,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:03:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 16:03:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 136. [2020-08-18 16:03:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-18 16:03:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2020-08-18 16:03:02,017 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 46 [2020-08-18 16:03:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:02,018 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2020-08-18 16:03:02,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:03:02,018 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2020-08-18 16:03:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:03:02,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:02,021 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] [2020-08-18 16:03:02,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:03:02,022 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:02,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:02,023 INFO L82 PathProgramCache]: Analyzing trace with hash 689119196, now seen corresponding path program 1 times [2020-08-18 16:03:02,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:02,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970746361] [2020-08-18 16:03:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:02,359 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:02,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:02,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:03:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:03:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:02,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970746361] [2020-08-18 16:03:02,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:02,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:03:02,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836606983] [2020-08-18 16:03:02,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:03:02,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:02,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:03:02,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:03:02,431 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand 4 states. [2020-08-18 16:03:02,826 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:03,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:03,725 INFO L93 Difference]: Finished difference Result 244 states and 300 transitions. [2020-08-18 16:03:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:03:03,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:03:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:03,730 INFO L225 Difference]: With dead ends: 244 [2020-08-18 16:03:03,730 INFO L226 Difference]: Without dead ends: 156 [2020-08-18 16:03:03,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:03:03,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-18 16:03:03,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 127. [2020-08-18 16:03:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 16:03:03,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2020-08-18 16:03:03,772 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 47 [2020-08-18 16:03:03,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:03,772 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2020-08-18 16:03:03,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:03:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2020-08-18 16:03:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:03:03,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:03,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:03,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:03:03,775 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:03,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:03,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1659347680, now seen corresponding path program 1 times [2020-08-18 16:03:03,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:03,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084177787] [2020-08-18 16:03:03,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:04,129 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:04,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:04,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:04,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:04,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:04,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:03:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:04,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:03:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:04,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084177787] [2020-08-18 16:03:04,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:04,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:03:04,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505977853] [2020-08-18 16:03:04,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:03:04,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:04,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:03:04,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:03:04,209 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand 8 states. [2020-08-18 16:03:04,575 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:04,929 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:05,166 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:05,406 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:06,183 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:08,130 INFO L93 Difference]: Finished difference Result 437 states and 546 transitions. [2020-08-18 16:03:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:03:08,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 16:03:08,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:08,136 INFO L225 Difference]: With dead ends: 437 [2020-08-18 16:03:08,136 INFO L226 Difference]: Without dead ends: 334 [2020-08-18 16:03:08,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:03:08,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-08-18 16:03:08,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 272. [2020-08-18 16:03:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-18 16:03:08,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 332 transitions. [2020-08-18 16:03:08,214 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 332 transitions. Word has length 51 [2020-08-18 16:03:08,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:08,214 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 332 transitions. [2020-08-18 16:03:08,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:03:08,215 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 332 transitions. [2020-08-18 16:03:08,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:03:08,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:08,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:03:08,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:03:08,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:08,218 INFO L82 PathProgramCache]: Analyzing trace with hash -2103406603, now seen corresponding path program 1 times [2020-08-18 16:03:08,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:08,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929406420] [2020-08-18 16:03:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:08,542 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:08,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:08,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:03:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:03:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:08,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:03:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:08,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929406420] [2020-08-18 16:03:08,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:08,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:03:08,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932432605] [2020-08-18 16:03:08,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:03:08,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:08,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:03:08,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:03:08,619 INFO L87 Difference]: Start difference. First operand 272 states and 332 transitions. Second operand 8 states. [2020-08-18 16:03:08,975 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:09,922 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:10,359 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:10,691 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:11,020 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:11,468 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:12,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:12,582 INFO L93 Difference]: Finished difference Result 882 states and 1149 transitions. [2020-08-18 16:03:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:03:12,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 16:03:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:12,590 INFO L225 Difference]: With dead ends: 882 [2020-08-18 16:03:12,591 INFO L226 Difference]: Without dead ends: 634 [2020-08-18 16:03:12,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:03:12,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-08-18 16:03:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 499. [2020-08-18 16:03:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-08-18 16:03:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 614 transitions. [2020-08-18 16:03:12,720 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 614 transitions. Word has length 57 [2020-08-18 16:03:12,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:12,721 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 614 transitions. [2020-08-18 16:03:12,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:03:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 614 transitions. [2020-08-18 16:03:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 16:03:12,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:12,725 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] [2020-08-18 16:03:12,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:03:12,725 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:12,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:12,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1216252231, now seen corresponding path program 1 times [2020-08-18 16:03:12,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:12,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214723734] [2020-08-18 16:03:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,054 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:03:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:03:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:03:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:03:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:03:13,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214723734] [2020-08-18 16:03:13,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:13,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:03:13,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962715645] [2020-08-18 16:03:13,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:03:13,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:13,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:03:13,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:03:13,231 INFO L87 Difference]: Start difference. First operand 499 states and 614 transitions. Second operand 9 states. [2020-08-18 16:03:13,582 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:14,550 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:14,826 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:15,114 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:15,768 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:16,038 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:17,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:17,045 INFO L93 Difference]: Finished difference Result 1415 states and 1900 transitions. [2020-08-18 16:03:17,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:03:17,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 16:03:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:17,053 INFO L225 Difference]: With dead ends: 1415 [2020-08-18 16:03:17,053 INFO L226 Difference]: Without dead ends: 940 [2020-08-18 16:03:17,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:03:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-08-18 16:03:17,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 759. [2020-08-18 16:03:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-08-18 16:03:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 935 transitions. [2020-08-18 16:03:17,199 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 935 transitions. Word has length 61 [2020-08-18 16:03:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:17,200 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 935 transitions. [2020-08-18 16:03:17,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:03:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 935 transitions. [2020-08-18 16:03:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 16:03:17,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:17,204 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 16:03:17,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:03:17,204 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:17,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:17,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1403376364, now seen corresponding path program 1 times [2020-08-18 16:03:17,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:17,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658505365] [2020-08-18 16:03:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,449 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:03:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:03:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:03:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:03:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:03:17,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658505365] [2020-08-18 16:03:17,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:17,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:03:17,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401542631] [2020-08-18 16:03:17,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:03:17,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:17,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:03:17,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:03:17,588 INFO L87 Difference]: Start difference. First operand 759 states and 935 transitions. Second operand 9 states. [2020-08-18 16:03:17,981 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:18,893 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:19,141 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:19,427 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:19,686 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:21,636 INFO L93 Difference]: Finished difference Result 2506 states and 3515 transitions. [2020-08-18 16:03:21,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:03:21,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-18 16:03:21,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:21,656 INFO L225 Difference]: With dead ends: 2506 [2020-08-18 16:03:21,657 INFO L226 Difference]: Without dead ends: 1771 [2020-08-18 16:03:21,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:03:21,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2020-08-18 16:03:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1371. [2020-08-18 16:03:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-08-18 16:03:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1674 transitions. [2020-08-18 16:03:22,046 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1674 transitions. Word has length 98 [2020-08-18 16:03:22,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:22,046 INFO L479 AbstractCegarLoop]: Abstraction has 1371 states and 1674 transitions. [2020-08-18 16:03:22,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:03:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1674 transitions. [2020-08-18 16:03:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 16:03:22,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:22,054 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 16:03:22,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:03:22,054 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:22,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1411135723, now seen corresponding path program 1 times [2020-08-18 16:03:22,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:22,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992513825] [2020-08-18 16:03:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,318 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:22,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:03:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:03:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:03:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:03:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:03:22,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992513825] [2020-08-18 16:03:22,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:22,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:03:22,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438248065] [2020-08-18 16:03:22,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:03:22,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:22,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:03:22,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:03:22,456 INFO L87 Difference]: Start difference. First operand 1371 states and 1674 transitions. Second operand 9 states. [2020-08-18 16:03:23,497 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:23,749 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:24,008 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:24,288 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:25,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:25,596 INFO L93 Difference]: Finished difference Result 3134 states and 4213 transitions. [2020-08-18 16:03:25,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:03:25,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-18 16:03:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:25,609 INFO L225 Difference]: With dead ends: 3134 [2020-08-18 16:03:25,610 INFO L226 Difference]: Without dead ends: 1787 [2020-08-18 16:03:25,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:03:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-08-18 16:03:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1411. [2020-08-18 16:03:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2020-08-18 16:03:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1714 transitions. [2020-08-18 16:03:25,955 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1714 transitions. Word has length 98 [2020-08-18 16:03:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:25,956 INFO L479 AbstractCegarLoop]: Abstraction has 1411 states and 1714 transitions. [2020-08-18 16:03:25,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:03:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1714 transitions. [2020-08-18 16:03:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 16:03:25,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:25,962 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 16:03:25,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:03:25,963 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:25,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1990345235, now seen corresponding path program 1 times [2020-08-18 16:03:25,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:25,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938020093] [2020-08-18 16:03:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,280 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:03:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:03:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 16:03:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:03:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:03:26,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938020093] [2020-08-18 16:03:26,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:03:26,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:03:26,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684910159] [2020-08-18 16:03:26,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:03:26,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:26,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:03:26,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:03:26,470 INFO L87 Difference]: Start difference. First operand 1411 states and 1714 transitions. Second operand 11 states. [2020-08-18 16:03:27,220 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:27,473 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:27,692 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:28,390 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:28,704 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:28,941 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:03:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:30,214 INFO L93 Difference]: Finished difference Result 2760 states and 3605 transitions. [2020-08-18 16:03:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:03:30,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-18 16:03:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:30,225 INFO L225 Difference]: With dead ends: 2760 [2020-08-18 16:03:30,226 INFO L226 Difference]: Without dead ends: 1373 [2020-08-18 16:03:30,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:03:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-08-18 16:03:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1129. [2020-08-18 16:03:30,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-08-18 16:03:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1346 transitions. [2020-08-18 16:03:30,460 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1346 transitions. Word has length 98 [2020-08-18 16:03:30,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:30,460 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1346 transitions. [2020-08-18 16:03:30,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:03:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1346 transitions. [2020-08-18 16:03:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 16:03:30,465 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:30,465 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 16:03:30,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:03:30,465 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash 860662504, now seen corresponding path program 1 times [2020-08-18 16:03:30,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:30,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039890860] [2020-08-18 16:03:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,805 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:30,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:03:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:03:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:03:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:03:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:03:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:03:31,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039890860] [2020-08-18 16:03:31,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:03:31,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 16:03:31,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364045355] [2020-08-18 16:03:31,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 16:03:31,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:31,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 16:03:31,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 16:03:31,294 INFO L87 Difference]: Start difference. First operand 1129 states and 1346 transitions. Second operand 17 states. [2020-08-18 16:03:32,127 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:32,562 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:03:32,784 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:33,006 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:33,633 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:34,227 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:34,617 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:35,910 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:36,193 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:36,513 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:36,836 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:37,323 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-18 16:03:37,850 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-18 16:03:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:39,249 INFO L93 Difference]: Finished difference Result 2470 states and 3101 transitions. [2020-08-18 16:03:39,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 16:03:39,249 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-18 16:03:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:39,258 INFO L225 Difference]: With dead ends: 2470 [2020-08-18 16:03:39,258 INFO L226 Difference]: Without dead ends: 1365 [2020-08-18 16:03:39,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 16:03:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-08-18 16:03:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1103. [2020-08-18 16:03:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-18 16:03:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1291 transitions. [2020-08-18 16:03:39,519 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1291 transitions. Word has length 102 [2020-08-18 16:03:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:39,521 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1291 transitions. [2020-08-18 16:03:39,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 16:03:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1291 transitions. [2020-08-18 16:03:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-18 16:03:39,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:39,530 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-08-18 16:03:39,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:03:39,531 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:39,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:39,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1219959590, now seen corresponding path program 1 times [2020-08-18 16:03:39,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:39,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743983837] [2020-08-18 16:03:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,897 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:39,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:03:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:03:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:03:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:03:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 16:03:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 16:03:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:03:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 16:03:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 16:03:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 16:03:40,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743983837] [2020-08-18 16:03:40,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:03:40,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 16:03:40,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701228340] [2020-08-18 16:03:40,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:03:40,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:40,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:03:40,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:03:40,081 INFO L87 Difference]: Start difference. First operand 1103 states and 1291 transitions. Second operand 9 states. [2020-08-18 16:03:41,045 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:43,154 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:44,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:44,293 INFO L93 Difference]: Finished difference Result 3017 states and 3973 transitions. [2020-08-18 16:03:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 16:03:44,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 153 [2020-08-18 16:03:44,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:44,309 INFO L225 Difference]: With dead ends: 3017 [2020-08-18 16:03:44,309 INFO L226 Difference]: Without dead ends: 2254 [2020-08-18 16:03:44,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-08-18 16:03:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2020-08-18 16:03:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1821. [2020-08-18 16:03:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2020-08-18 16:03:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2151 transitions. [2020-08-18 16:03:44,814 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2151 transitions. Word has length 153 [2020-08-18 16:03:44,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:44,815 INFO L479 AbstractCegarLoop]: Abstraction has 1821 states and 2151 transitions. [2020-08-18 16:03:44,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:03:44,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2151 transitions. [2020-08-18 16:03:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-18 16:03:44,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:03:44,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-08-18 16:03:44,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:03:44,821 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:03:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:03:44,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1025619864, now seen corresponding path program 1 times [2020-08-18 16:03:44,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:03:44,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959547320] [2020-08-18 16:03:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:03:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,168 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:03:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:03:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:03:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:03:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:03:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:03:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:03:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:03:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:03:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:03:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:03:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 16:03:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 16:03:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:03:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:03:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:03:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 16:03:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 16:03:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:03:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 16:03:45,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959547320] [2020-08-18 16:03:45,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:03:45,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 16:03:45,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273946928] [2020-08-18 16:03:45,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 16:03:45,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:03:45,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 16:03:45,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:03:45,448 INFO L87 Difference]: Start difference. First operand 1821 states and 2151 transitions. Second operand 18 states. [2020-08-18 16:03:46,124 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:46,480 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:03:46,753 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:47,011 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:03:47,704 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:03:48,363 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:48,769 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:50,033 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:50,310 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:50,630 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:50,930 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:51,919 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:52,171 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:52,447 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:52,686 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:03:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:03:53,541 INFO L93 Difference]: Finished difference Result 3558 states and 4508 transitions. [2020-08-18 16:03:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 16:03:53,542 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 153 [2020-08-18 16:03:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:03:53,543 INFO L225 Difference]: With dead ends: 3558 [2020-08-18 16:03:53,543 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:03:53,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-08-18 16:03:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:03:53,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:03:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:03:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:03:53,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2020-08-18 16:03:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:03:53,555 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:03:53,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 16:03:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:03:53,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:03:53,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:03:53,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.