/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:45:45,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:45:45,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:45:45,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:45:45,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:45:45,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:45:45,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:45:45,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:45:45,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:45:45,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:45:45,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:45:45,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:45:45,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:45:45,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:45:45,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:45:45,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:45:45,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:45:45,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:45:45,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:45:45,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:45:45,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:45:45,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:45:45,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:45:45,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:45:45,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:45:45,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:45:45,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:45:45,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:45:45,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:45:45,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:45:45,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:45:45,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:45:45,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:45:45,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:45:45,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:45:45,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:45:45,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:45:45,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:45:45,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:45:45,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:45:45,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:45:45,393 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 [2020-08-21 14:45:45,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:45:45,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:45:45,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:45:45,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:45:45,438 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:45:45,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:45:45,439 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:45:45,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:45:45,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:45:45,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:45:45,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:45:45,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:45:45,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:45:45,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:45:45,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:45:45,441 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:45:45,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:45:45,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:45:45,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:45:45,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:45:45,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:45:45,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:45:45,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:45:45,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:45:45,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:45:45,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:45:45,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:45:45,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:45:45,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:45:45,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:45:45,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:45:45,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:45:45,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:45:45,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:45:45,741 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:45:45,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 14:45:45,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d9bae977/f5caa08545524c6cb732adc28eb2fea8/FLAGc8ed98cb4 [2020-08-21 14:45:46,347 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:45:46,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 14:45:46,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d9bae977/f5caa08545524c6cb732adc28eb2fea8/FLAGc8ed98cb4 [2020-08-21 14:45:46,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d9bae977/f5caa08545524c6cb732adc28eb2fea8 [2020-08-21 14:45:46,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:45:46,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:45:46,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:45:46,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:45:46,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:45:46,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:45:46" (1/1) ... [2020-08-21 14:45:46,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73af11df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:46, skipping insertion in model container [2020-08-21 14:45:46,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:45:46" (1/1) ... [2020-08-21 14:45:46,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:45:46,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:45:47,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:45:47,190 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:45:47,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:45:47,346 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:45:47,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47 WrapperNode [2020-08-21 14:45:47,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:45:47,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:45:47,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:45:47,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:45:47,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47" (1/1) ... [2020-08-21 14:45:47,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47" (1/1) ... [2020-08-21 14:45:47,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47" (1/1) ... [2020-08-21 14:45:47,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47" (1/1) ... [2020-08-21 14:45:47,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47" (1/1) ... [2020-08-21 14:45:47,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47" (1/1) ... [2020-08-21 14:45:47,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47" (1/1) ... [2020-08-21 14:45:47,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:45:47,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:45:47,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:45:47,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:45:47,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47" (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 [2020-08-21 14:45:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:45:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:45:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:45:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:45:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:45:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:45:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:45:47,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:45:47,536 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:45:47,536 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:45:47,536 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:45:47,536 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:45:47,536 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 14:45:47,536 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:45:47,536 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:45:47,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:45:47,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:45:47,537 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:45:47,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:45:47,537 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:45:47,538 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:45:47,538 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:45:47,538 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:45:47,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:45:47,538 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:45:47,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:45:47,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:45:47,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:45:47,539 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:45:47,539 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:45:47,539 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:45:47,539 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:45:47,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:45:47,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:45:47,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:45:47,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:45:47,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:45:47,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:45:47,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:45:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:45:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:45:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:45:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:45:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:45:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:45:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:45:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:45:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:45:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:45:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:45:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:45:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:45:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:45:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:45:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:45:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:45:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:45:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:45:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:45:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:45:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:45:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:45:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:45:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:45:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:45:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:45:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:45:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 14:45:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:45:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:45:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:45:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:45:47,545 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:45:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:45:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:45:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:45:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:45:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:45:47,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:45:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:45:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:45:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:45:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:45:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:45:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:45:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:45:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:45:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:45:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:45:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:45:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:45:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:45:48,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:45:48,804 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:45:48,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:45:48 BoogieIcfgContainer [2020-08-21 14:45:48,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:45:48,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:45:48,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:45:48,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:45:48,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:45:46" (1/3) ... [2020-08-21 14:45:48,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3704264a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:45:48, skipping insertion in model container [2020-08-21 14:45:48,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:47" (2/3) ... [2020-08-21 14:45:48,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3704264a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:45:48, skipping insertion in model container [2020-08-21 14:45:48,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:45:48" (3/3) ... [2020-08-21 14:45:48,818 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-21 14:45:48,828 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:45:48,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:45:48,849 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:45:48,874 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:45:48,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:45:48,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:45:48,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:45:48,875 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:45:48,875 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:45:48,876 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:45:48,876 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:45:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 14:45:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 14:45:48,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:48,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:45:48,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:48,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-21 14:45:48,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:48,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189054070] [2020-08-21 14:45:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,534 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:45:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:45:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:45:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:49,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189054070] [2020-08-21 14:45:49,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:49,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:45:49,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713179072] [2020-08-21 14:45:49,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:45:49,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:49,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:45:49,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:45:49,659 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 14:45:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:50,691 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-21 14:45:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:45:50,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 14:45:50,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:50,707 INFO L225 Difference]: With dead ends: 296 [2020-08-21 14:45:50,707 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 14:45:50,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:45:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 14:45:50,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-21 14:45:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 14:45:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-21 14:45:50,796 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-21 14:45:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:50,796 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-21 14:45:50,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:45:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-21 14:45:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 14:45:50,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:50,800 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] [2020-08-21 14:45:50,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:45:50,801 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:50,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:50,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-21 14:45:50,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:50,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852548876] [2020-08-21 14:45:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:51,203 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:51,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:51,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:51,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:51,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:45:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:51,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 14:45:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:51,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:45:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:51,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852548876] [2020-08-21 14:45:51,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:51,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:45:51,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162349429] [2020-08-21 14:45:51,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:45:51,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:51,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:45:51,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:45:51,250 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-21 14:45:51,660 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:45:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:52,446 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-21 14:45:52,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:45:52,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 14:45:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:52,450 INFO L225 Difference]: With dead ends: 225 [2020-08-21 14:45:52,450 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 14:45:52,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:45:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 14:45:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 14:45:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 14:45:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-21 14:45:52,489 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-21 14:45:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:52,489 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-21 14:45:52,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:45:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-21 14:45:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 14:45:52,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:52,492 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] [2020-08-21 14:45:52,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:45:52,492 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:52,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-21 14:45:52,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:52,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244754074] [2020-08-21 14:45:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:52,797 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:52,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:52,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:52,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:52,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:52,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:52,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:45:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:45:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:52,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:45:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:52,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244754074] [2020-08-21 14:45:52,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:52,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:45:52,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275117029] [2020-08-21 14:45:52,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:45:52,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:52,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:45:52,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:45:52,924 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-21 14:45:53,284 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:53,581 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:53,833 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:54,073 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:55,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:55,168 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-21 14:45:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:45:55,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 14:45:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:55,174 INFO L225 Difference]: With dead ends: 238 [2020-08-21 14:45:55,174 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 14:45:55,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:45:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 14:45:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 14:45:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 14:45:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-21 14:45:55,210 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-21 14:45:55,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:55,210 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-21 14:45:55,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:45:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-21 14:45:55,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 14:45:55,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:55,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:45:55,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:45:55,213 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:55,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-21 14:45:55,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:55,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807738617] [2020-08-21 14:45:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,486 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:45:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:45:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 14:45:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 14:45:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 14:45:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:55,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807738617] [2020-08-21 14:45:55,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:55,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:45:55,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411864590] [2020-08-21 14:45:55,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:45:55,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:55,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:45:55,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:45:55,567 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-21 14:45:55,888 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:56,988 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:45:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:57,611 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-21 14:45:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 14:45:57,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-21 14:45:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:57,615 INFO L225 Difference]: With dead ends: 338 [2020-08-21 14:45:57,615 INFO L226 Difference]: Without dead ends: 244 [2020-08-21 14:45:57,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:45:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-21 14:45:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-21 14:45:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-21 14:45:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-21 14:45:57,687 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-21 14:45:57,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:57,687 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-21 14:45:57,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:45:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-21 14:45:57,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-21 14:45:57,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:57,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:45:57,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:45:57,690 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:57,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:57,690 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-21 14:45:57,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:57,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461811058] [2020-08-21 14:45:57,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:57,943 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:57,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:57,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:45:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:45:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:45:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:45:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 14:45:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 14:45:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 14:45:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:58,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461811058] [2020-08-21 14:45:58,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:58,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:45:58,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027167358] [2020-08-21 14:45:58,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:45:58,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:58,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:45:58,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:45:58,058 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-21 14:45:58,429 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:59,770 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:00,035 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:00,282 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:00,497 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:01,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:01,073 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-21 14:46:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:46:01,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-21 14:46:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:01,084 INFO L225 Difference]: With dead ends: 555 [2020-08-21 14:46:01,085 INFO L226 Difference]: Without dead ends: 378 [2020-08-21 14:46:01,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:46:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-21 14:46:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-21 14:46:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 14:46:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-21 14:46:01,181 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-21 14:46:01,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:01,181 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-21 14:46:01,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:46:01,182 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-21 14:46:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 14:46:01,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:01,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:01,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:46:01,184 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:01,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:01,185 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-21 14:46:01,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:01,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132308378] [2020-08-21 14:46:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,535 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:01,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:46:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 14:46:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 14:46:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 14:46:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:01,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132308378] [2020-08-21 14:46:01,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:01,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:46:01,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85082096] [2020-08-21 14:46:01,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:46:01,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:01,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:46:01,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:46:01,709 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-21 14:46:02,030 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:02,532 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:03,986 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:05,404 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-21 14:46:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 14:46:05,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 14:46:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:05,411 INFO L225 Difference]: With dead ends: 815 [2020-08-21 14:46:05,411 INFO L226 Difference]: Without dead ends: 627 [2020-08-21 14:46:05,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-21 14:46:05,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-21 14:46:05,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-21 14:46:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 14:46:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-21 14:46:05,511 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-21 14:46:05,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:05,511 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-21 14:46:05,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:46:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-21 14:46:05,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 14:46:05,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:05,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:05,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:46:05,514 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:05,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:05,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-21 14:46:05,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:05,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878487697] [2020-08-21 14:46:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,737 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:46:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 14:46:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 14:46:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 14:46:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:05,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878487697] [2020-08-21 14:46:05,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:05,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:46:05,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364044488] [2020-08-21 14:46:05,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:46:05,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:05,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:46:05,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:46:05,894 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-21 14:46:06,667 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:06,910 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:07,143 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:07,950 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-21 14:46:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 14:46:07,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-21 14:46:07,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:07,955 INFO L225 Difference]: With dead ends: 1006 [2020-08-21 14:46:07,956 INFO L226 Difference]: Without dead ends: 601 [2020-08-21 14:46:07,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:46:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-21 14:46:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-21 14:46:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 14:46:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-21 14:46:08,082 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-21 14:46:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:08,082 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-21 14:46:08,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:46:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-21 14:46:08,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 14:46:08,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:08,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:08,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:46:08,086 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:08,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:08,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-21 14:46:08,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:08,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112236544] [2020-08-21 14:46:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,352 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:46:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 14:46:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 14:46:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 14:46:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:08,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112236544] [2020-08-21 14:46:08,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:08,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:46:08,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680965685] [2020-08-21 14:46:08,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:46:08,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:08,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:46:08,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:46:08,532 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-21 14:46:09,004 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:09,229 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:09,444 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:10,103 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:10,330 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:46:10,591 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:10,811 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:11,728 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-21 14:46:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 14:46:11,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 14:46:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:11,733 INFO L225 Difference]: With dead ends: 1144 [2020-08-21 14:46:11,733 INFO L226 Difference]: Without dead ends: 612 [2020-08-21 14:46:11,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 14:46:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-21 14:46:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-21 14:46:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-21 14:46:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-21 14:46:11,865 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-21 14:46:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:11,866 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-21 14:46:11,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:46:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-21 14:46:11,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 14:46:11,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:11,869 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] [2020-08-21 14:46:11,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:46:11,870 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:11,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:11,870 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-21 14:46:11,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:11,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480677698] [2020-08-21 14:46:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,146 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:12,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:46:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 14:46:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:46:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:46:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 14:46:12,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480677698] [2020-08-21 14:46:12,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:46:12,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:46:12,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413444084] [2020-08-21 14:46:12,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:46:12,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:12,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:46:12,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:46:12,374 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-21 14:46:12,780 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:13,466 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:14,258 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:46:14,566 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:46:14,840 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:46:15,075 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:15,350 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:46:15,601 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:16,050 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-21 14:46:16,292 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:16,572 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:16,869 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:46:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:18,729 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-21 14:46:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 14:46:18,730 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 14:46:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:18,739 INFO L225 Difference]: With dead ends: 1664 [2020-08-21 14:46:18,740 INFO L226 Difference]: Without dead ends: 1125 [2020-08-21 14:46:18,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-21 14:46:18,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-21 14:46:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-21 14:46:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-21 14:46:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-21 14:46:18,910 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-21 14:46:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:18,911 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-21 14:46:18,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:46:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-21 14:46:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 14:46:18,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:18,914 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] [2020-08-21 14:46:18,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:46:18,914 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:18,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:18,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-21 14:46:18,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:18,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134482574] [2020-08-21 14:46:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,259 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:19,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:46:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:46:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 14:46:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 14:46:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 14:46:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 14:46:19,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134482574] [2020-08-21 14:46:19,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:19,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 14:46:19,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11551591] [2020-08-21 14:46:19,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 14:46:19,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:19,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 14:46:19,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:46:19,461 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-21 14:46:20,413 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:20,710 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:20,919 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:21,497 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:22,265 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:22,589 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:23,133 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:23,393 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:23,649 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:25,271 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-21 14:46:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 14:46:25,272 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-21 14:46:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:25,279 INFO L225 Difference]: With dead ends: 2205 [2020-08-21 14:46:25,280 INFO L226 Difference]: Without dead ends: 1167 [2020-08-21 14:46:25,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 14:46:25,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-21 14:46:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-21 14:46:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-21 14:46:25,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-21 14:46:25,459 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-21 14:46:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:25,460 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-21 14:46:25,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 14:46:25,460 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-21 14:46:25,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 14:46:25,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:25,464 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] [2020-08-21 14:46:25,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:46:25,465 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:25,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:25,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-21 14:46:25,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:25,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451528357] [2020-08-21 14:46:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,781 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:25,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:46:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 14:46:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 14:46:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 14:46:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:46:25,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451528357] [2020-08-21 14:46:25,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:25,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 14:46:25,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721491820] [2020-08-21 14:46:25,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 14:46:25,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:25,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 14:46:25,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:46:25,973 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-21 14:46:26,793 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:27,020 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:27,238 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:28,290 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:28,746 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:29,049 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:29,326 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:29,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:29,982 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-21 14:46:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 14:46:29,983 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-21 14:46:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:29,984 INFO L225 Difference]: With dead ends: 1688 [2020-08-21 14:46:29,984 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 14:46:29,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-21 14:46:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 14:46:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 14:46:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 14:46:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 14:46:29,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-21 14:46:29,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:29,991 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 14:46:29,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:46:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 14:46:29,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 14:46:29,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:46:29,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 14:46:31,196 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 14:46:34,007 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 14:46:34,490 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 14:46:34,825 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 14:46:35,328 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 14:46:36,373 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 14:46:37,512 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-21 14:46:37,672 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 14:46:38,114 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-21 14:46:38,276 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-21 14:46:38,533 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-21 14:46:38,691 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-21 14:46:39,792 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-21 14:46:39,959 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 14:46:40,747 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 14:46:41,029 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27 [2020-08-21 14:46:41,592 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-21 14:46:42,447 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2020-08-21 14:46:43,570 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 168 DAG size of output: 30 [2020-08-21 14:46:43,761 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:43,868 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-08-21 14:46:44,027 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 14:46:44,211 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 26 [2020-08-21 14:46:44,376 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1