/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_spec2_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:32:26,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:32:26,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:32:26,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:32:26,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:32:26,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:32:26,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:32:26,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:32:26,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:32:26,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:32:26,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:32:26,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:32:26,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:32:26,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:32:26,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:32:26,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:32:26,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:32:26,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:32:26,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:32:26,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:32:26,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:32:26,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:32:26,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:32:26,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:32:26,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:32:26,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:32:26,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:32:26,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:32:26,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:32:26,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:32:26,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:32:26,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:32:26,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:32:26,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:32:26,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:32:26,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:32:26,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:32:26,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:32:26,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:32:26,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:32:26,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:32:26,704 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 15:32:26,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:32:26,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:32:26,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:32:26,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:32:26,729 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:32:26,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:32:26,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:32:26,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:32:26,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:32:26,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:32:26,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:32:26,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:32:26,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:32:26,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:32:26,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:32:26,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:32:26,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:32:26,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:32:26,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:32:26,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:32:26,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:32:26,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:32:26,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:32:26,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:32:26,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:32:26,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:32:26,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:32:26,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:32:26,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:32:26,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:32:27,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:32:27,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:32:27,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:32:27,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:32:27,036 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:32:27,037 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-21 15:32:27,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd405b904/ec496f92d94b47c39d028656ad5de16d/FLAG73727d205 [2020-08-21 15:32:27,678 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:32:27,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-21 15:32:27,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd405b904/ec496f92d94b47c39d028656ad5de16d/FLAG73727d205 [2020-08-21 15:32:27,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd405b904/ec496f92d94b47c39d028656ad5de16d [2020-08-21 15:32:27,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:32:27,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:32:27,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:32:27,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:32:28,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:32:28,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:32:27" (1/1) ... [2020-08-21 15:32:28,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecced43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28, skipping insertion in model container [2020-08-21 15:32:28,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:32:27" (1/1) ... [2020-08-21 15:32:28,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:32:28,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:32:28,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:32:28,530 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:32:28,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:32:28,707 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:32:28,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28 WrapperNode [2020-08-21 15:32:28,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:32:28,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:32:28,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:32:28,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:32:28,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28" (1/1) ... [2020-08-21 15:32:28,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28" (1/1) ... [2020-08-21 15:32:28,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28" (1/1) ... [2020-08-21 15:32:28,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28" (1/1) ... [2020-08-21 15:32:28,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28" (1/1) ... [2020-08-21 15:32:28,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28" (1/1) ... [2020-08-21 15:32:28,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28" (1/1) ... [2020-08-21 15:32:28,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:32:28,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:32:28,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:32:28,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:32:28,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28" (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 15:32:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:32:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:32:28,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:32:28,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:32:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:32:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:32:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:32:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:32:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 15:32:28,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 15:32:28,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:32:28,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:32:28,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:32:28,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:32:28,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:32:28,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:32:28,928 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:32:28,929 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:32:28,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:32:28,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:32:28,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 15:32:28,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:32:28,929 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:32:28,929 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:32:28,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:32:28,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:32:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:32:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:32:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 15:32:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:32:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:32:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:32:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:32:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:32:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:32:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:32:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:32:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 15:32:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:32:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:32:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:32:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:32:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:32:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:32:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:32:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:32:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:32:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:32:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:32:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:32:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:32:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:32:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:32:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 15:32:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:32:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:32:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:32:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:32:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:32:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:32:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:32:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:32:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:32:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 15:32:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:32:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:32:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:32:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:32:28,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:32:28,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:32:28,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:32:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:32:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:32:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:32:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:32:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:32:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:32:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:32:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:32:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:32:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:32:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:32:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:32:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:32:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:32:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 15:32:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:32:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:32:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:32:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:32:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:32:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:32:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 15:32:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 15:32:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:32:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:32:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:32:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:32:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:32:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:32:30,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:32:30,150 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:32:30,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:32:30 BoogieIcfgContainer [2020-08-21 15:32:30,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:32:30,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:32:30,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:32:30,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:32:30,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:32:27" (1/3) ... [2020-08-21 15:32:30,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9dacd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:32:30, skipping insertion in model container [2020-08-21 15:32:30,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:32:28" (2/3) ... [2020-08-21 15:32:30,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9dacd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:32:30, skipping insertion in model container [2020-08-21 15:32:30,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:32:30" (3/3) ... [2020-08-21 15:32:30,170 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product54.cil.c [2020-08-21 15:32:30,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:32:30,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:32:30,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:32:30,236 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:32:30,236 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:32:30,237 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:32:30,237 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:32:30,237 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:32:30,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:32:30,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:32:30,238 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:32:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2020-08-21 15:32:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 15:32:30,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:30,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:30,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:30,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1445624956, now seen corresponding path program 1 times [2020-08-21 15:32:30,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:30,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520903977] [2020-08-21 15:32:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:31,005 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:31,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:31,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:31,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:31,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:31,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:32:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:31,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:32:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:31,139 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 15:32:31,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520903977] [2020-08-21 15:32:31,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:31,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:32:31,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095992795] [2020-08-21 15:32:31,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:32:31,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:31,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:32:31,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:32:31,169 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 4 states. [2020-08-21 15:32:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:32,428 INFO L93 Difference]: Finished difference Result 338 states and 440 transitions. [2020-08-21 15:32:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:32:32,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 15:32:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:32,456 INFO L225 Difference]: With dead ends: 338 [2020-08-21 15:32:32,456 INFO L226 Difference]: Without dead ends: 187 [2020-08-21 15:32:32,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:32:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-08-21 15:32:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 152. [2020-08-21 15:32:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-21 15:32:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-08-21 15:32:32,638 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 51 [2020-08-21 15:32:32,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:32,639 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-08-21 15:32:32,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:32:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-08-21 15:32:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:32:32,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:32,652 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 15:32:32,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:32:32,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:32,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:32,654 INFO L82 PathProgramCache]: Analyzing trace with hash 313505704, now seen corresponding path program 1 times [2020-08-21 15:32:32,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:32,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116882110] [2020-08-21 15:32:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,034 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:33,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:32:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:32:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:33,123 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 15:32:33,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116882110] [2020-08-21 15:32:33,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:33,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:32:33,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177314497] [2020-08-21 15:32:33,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:32:33,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:33,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:32:33,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:32:33,127 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 5 states. [2020-08-21 15:32:33,629 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:34,826 INFO L93 Difference]: Finished difference Result 279 states and 347 transitions. [2020-08-21 15:32:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:32:34,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 15:32:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:34,830 INFO L225 Difference]: With dead ends: 279 [2020-08-21 15:32:34,830 INFO L226 Difference]: Without dead ends: 177 [2020-08-21 15:32:34,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:32:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-21 15:32:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-21 15:32:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-21 15:32:34,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-08-21 15:32:34,875 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 52 [2020-08-21 15:32:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:34,876 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-08-21 15:32:34,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:32:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-08-21 15:32:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 15:32:34,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:34,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:34,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:32:34,879 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:34,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:34,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1935207340, now seen corresponding path program 1 times [2020-08-21 15:32:34,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:34,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492437037] [2020-08-21 15:32:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:35,204 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:35,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:32:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:32:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:35,300 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 15:32:35,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492437037] [2020-08-21 15:32:35,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:35,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:32:35,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179235793] [2020-08-21 15:32:35,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:32:35,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:35,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:32:35,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:32:35,304 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 9 states. [2020-08-21 15:32:35,673 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:36,020 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:36,257 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:36,484 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:37,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:37,960 INFO L93 Difference]: Finished difference Result 292 states and 366 transitions. [2020-08-21 15:32:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:32:37,961 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 15:32:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:37,965 INFO L225 Difference]: With dead ends: 292 [2020-08-21 15:32:37,965 INFO L226 Difference]: Without dead ends: 177 [2020-08-21 15:32:37,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:32:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-21 15:32:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-21 15:32:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-21 15:32:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2020-08-21 15:32:38,031 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 57 [2020-08-21 15:32:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:38,032 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2020-08-21 15:32:38,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:32:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2020-08-21 15:32:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-21 15:32:38,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:38,034 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] [2020-08-21 15:32:38,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:32:38,034 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:38,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:38,035 INFO L82 PathProgramCache]: Analyzing trace with hash 979214064, now seen corresponding path program 1 times [2020-08-21 15:32:38,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:38,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340187439] [2020-08-21 15:32:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,319 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:32:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 15:32:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:32:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:38,482 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 15:32:38,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340187439] [2020-08-21 15:32:38,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:38,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:32:38,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976931661] [2020-08-21 15:32:38,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:32:38,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:38,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:32:38,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:32:38,486 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 7 states. [2020-08-21 15:32:38,809 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:40,052 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:40,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:40,931 INFO L93 Difference]: Finished difference Result 397 states and 501 transitions. [2020-08-21 15:32:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:32:40,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-21 15:32:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:40,936 INFO L225 Difference]: With dead ends: 397 [2020-08-21 15:32:40,937 INFO L226 Difference]: Without dead ends: 282 [2020-08-21 15:32:40,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:32:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-21 15:32:40,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 233. [2020-08-21 15:32:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-21 15:32:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2020-08-21 15:32:40,988 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 75 [2020-08-21 15:32:40,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:40,988 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2020-08-21 15:32:40,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:32:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2020-08-21 15:32:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 15:32:40,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:40,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:40,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:32:40,990 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:40,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:40,991 INFO L82 PathProgramCache]: Analyzing trace with hash -919866488, now seen corresponding path program 1 times [2020-08-21 15:32:40,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:40,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243620742] [2020-08-21 15:32:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,293 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:41,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:32:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 15:32:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 15:32:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:41,489 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 15:32:41,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243620742] [2020-08-21 15:32:41,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:41,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:32:41,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217618149] [2020-08-21 15:32:41,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:32:41,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:41,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:32:41,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:32:41,495 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand 9 states. [2020-08-21 15:32:41,910 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:43,237 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:43,518 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:43,780 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:44,058 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:45,486 INFO L93 Difference]: Finished difference Result 695 states and 864 transitions. [2020-08-21 15:32:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 15:32:45,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-21 15:32:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:45,491 INFO L225 Difference]: With dead ends: 695 [2020-08-21 15:32:45,492 INFO L226 Difference]: Without dead ends: 490 [2020-08-21 15:32:45,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 15:32:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-21 15:32:45,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 414. [2020-08-21 15:32:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-08-21 15:32:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 472 transitions. [2020-08-21 15:32:45,620 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 472 transitions. Word has length 89 [2020-08-21 15:32:45,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:45,620 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 472 transitions. [2020-08-21 15:32:45,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:32:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 472 transitions. [2020-08-21 15:32:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:32:45,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:45,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:45,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:32:45,623 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:45,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1008826772, now seen corresponding path program 1 times [2020-08-21 15:32:45,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:45,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902952320] [2020-08-21 15:32:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,914 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:32:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:32:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 15:32:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:32:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:46,036 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 15:32:46,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902952320] [2020-08-21 15:32:46,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:46,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 15:32:46,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147399559] [2020-08-21 15:32:46,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:32:46,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:46,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:32:46,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:32:46,039 INFO L87 Difference]: Start difference. First operand 414 states and 472 transitions. Second operand 10 states. [2020-08-21 15:32:46,430 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:47,628 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:47,867 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:32:48,111 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:48,394 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:49,797 INFO L93 Difference]: Finished difference Result 914 states and 1119 transitions. [2020-08-21 15:32:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 15:32:49,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-21 15:32:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:49,804 INFO L225 Difference]: With dead ends: 914 [2020-08-21 15:32:49,804 INFO L226 Difference]: Without dead ends: 528 [2020-08-21 15:32:49,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 15:32:49,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-08-21 15:32:49,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 413. [2020-08-21 15:32:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-08-21 15:32:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 469 transitions. [2020-08-21 15:32:49,919 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 469 transitions. Word has length 93 [2020-08-21 15:32:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:49,920 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 469 transitions. [2020-08-21 15:32:49,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:32:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 469 transitions. [2020-08-21 15:32:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 15:32:49,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:49,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:49,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:32:49,925 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:49,926 INFO L82 PathProgramCache]: Analyzing trace with hash 390870795, now seen corresponding path program 1 times [2020-08-21 15:32:49,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:49,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295537769] [2020-08-21 15:32:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,214 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:50,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:32:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:32:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:32:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 15:32:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:50,455 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 15:32:50,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295537769] [2020-08-21 15:32:50,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:50,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 15:32:50,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117909982] [2020-08-21 15:32:50,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:32:50,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:50,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:32:50,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:32:50,466 INFO L87 Difference]: Start difference. First operand 413 states and 469 transitions. Second operand 10 states. [2020-08-21 15:32:51,750 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:32:51,995 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:32:52,249 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:52,503 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:53,794 INFO L93 Difference]: Finished difference Result 917 states and 1130 transitions. [2020-08-21 15:32:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 15:32:53,794 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-21 15:32:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:53,798 INFO L225 Difference]: With dead ends: 917 [2020-08-21 15:32:53,798 INFO L226 Difference]: Without dead ends: 532 [2020-08-21 15:32:53,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:32:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-21 15:32:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 423. [2020-08-21 15:32:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-21 15:32:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 479 transitions. [2020-08-21 15:32:53,864 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 479 transitions. Word has length 94 [2020-08-21 15:32:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:53,864 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 479 transitions. [2020-08-21 15:32:53,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:32:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 479 transitions. [2020-08-21 15:32:53,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 15:32:53,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:53,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:53,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:32:53,866 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:53,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:53,867 INFO L82 PathProgramCache]: Analyzing trace with hash 318484237, now seen corresponding path program 1 times [2020-08-21 15:32:53,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:53,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583200227] [2020-08-21 15:32:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,094 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:32:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:32:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:32:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 15:32:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:54,240 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 15:32:54,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583200227] [2020-08-21 15:32:54,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:54,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:32:54,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649478808] [2020-08-21 15:32:54,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:32:54,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:32:54,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:32:54,243 INFO L87 Difference]: Start difference. First operand 423 states and 479 transitions. Second operand 12 states. [2020-08-21 15:32:55,212 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:55,454 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:55,685 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:56,459 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:56,725 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:56,977 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:32:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:32:58,485 INFO L93 Difference]: Finished difference Result 941 states and 1174 transitions. [2020-08-21 15:32:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:32:58,486 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-21 15:32:58,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:32:58,490 INFO L225 Difference]: With dead ends: 941 [2020-08-21 15:32:58,490 INFO L226 Difference]: Without dead ends: 546 [2020-08-21 15:32:58,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:32:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-08-21 15:32:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 431. [2020-08-21 15:32:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-08-21 15:32:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 487 transitions. [2020-08-21 15:32:58,624 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 487 transitions. Word has length 94 [2020-08-21 15:32:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:32:58,626 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 487 transitions. [2020-08-21 15:32:58,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:32:58,627 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 487 transitions. [2020-08-21 15:32:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 15:32:58,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:32:58,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:32:58,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:32:58,635 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:32:58,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:32:58,636 INFO L82 PathProgramCache]: Analyzing trace with hash 648249998, now seen corresponding path program 1 times [2020-08-21 15:32:58,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:32:58,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460071789] [2020-08-21 15:32:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:32:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:58,967 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:32:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:32:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:32:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:32:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:32:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:32:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:32:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:32:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:32:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:32:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:32:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:32:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:32:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 15:32:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:32:59,131 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 15:32:59,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460071789] [2020-08-21 15:32:59,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:32:59,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:32:59,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063984607] [2020-08-21 15:32:59,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:32:59,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:32:59,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:32:59,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:32:59,134 INFO L87 Difference]: Start difference. First operand 431 states and 487 transitions. Second operand 8 states. [2020-08-21 15:32:59,665 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:33:00,293 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:33:02,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:02,980 INFO L93 Difference]: Finished difference Result 1309 states and 1687 transitions. [2020-08-21 15:33:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 15:33:02,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-21 15:33:02,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:02,987 INFO L225 Difference]: With dead ends: 1309 [2020-08-21 15:33:02,988 INFO L226 Difference]: Without dead ends: 906 [2020-08-21 15:33:02,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 15:33:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-08-21 15:33:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 761. [2020-08-21 15:33:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-08-21 15:33:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 889 transitions. [2020-08-21 15:33:03,155 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 889 transitions. Word has length 94 [2020-08-21 15:33:03,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:03,156 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 889 transitions. [2020-08-21 15:33:03,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:33:03,156 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 889 transitions. [2020-08-21 15:33:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 15:33:03,160 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:03,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:33:03,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:33:03,161 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:03,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1149612728, now seen corresponding path program 1 times [2020-08-21 15:33:03,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:03,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109038693] [2020-08-21 15:33:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,529 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:33:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:33:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:33:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:33:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:33:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:33:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:33:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 15:33:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:33:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:03,631 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 15:33:03,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109038693] [2020-08-21 15:33:03,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:03,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:33:03,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454329863] [2020-08-21 15:33:03,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:33:03,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:03,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:33:03,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:33:03,633 INFO L87 Difference]: Start difference. First operand 761 states and 889 transitions. Second operand 8 states. [2020-08-21 15:33:03,973 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:33:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:06,412 INFO L93 Difference]: Finished difference Result 1499 states and 1925 transitions. [2020-08-21 15:33:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 15:33:06,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-21 15:33:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:06,421 INFO L225 Difference]: With dead ends: 1499 [2020-08-21 15:33:06,421 INFO L226 Difference]: Without dead ends: 1496 [2020-08-21 15:33:06,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 15:33:06,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-08-21 15:33:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1269. [2020-08-21 15:33:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-21 15:33:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1498 transitions. [2020-08-21 15:33:06,634 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1498 transitions. Word has length 98 [2020-08-21 15:33:06,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:06,635 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1498 transitions. [2020-08-21 15:33:06,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:33:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1498 transitions. [2020-08-21 15:33:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 15:33:06,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:06,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:33:06,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:33:06,640 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:06,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1054262603, now seen corresponding path program 1 times [2020-08-21 15:33:06,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:06,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909653164] [2020-08-21 15:33:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:06,909 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:33:06,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:06,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:33:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:33:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:33:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:33:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:33:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:33:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:33:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:33:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:33:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 15:33:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:33:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:33:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 15:33:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-21 15:33:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 15:33:07,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909653164] [2020-08-21 15:33:07,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:33:07,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 15:33:07,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185640217] [2020-08-21 15:33:07,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:33:07,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:07,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:33:07,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:33:07,145 INFO L87 Difference]: Start difference. First operand 1269 states and 1498 transitions. Second operand 13 states. [2020-08-21 15:33:07,898 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:33:08,251 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:33:08,546 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:33:09,644 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:33:11,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:11,808 INFO L93 Difference]: Finished difference Result 2281 states and 2814 transitions. [2020-08-21 15:33:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 15:33:11,809 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-08-21 15:33:11,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:11,817 INFO L225 Difference]: With dead ends: 2281 [2020-08-21 15:33:11,817 INFO L226 Difference]: Without dead ends: 1182 [2020-08-21 15:33:11,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 15:33:11,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2020-08-21 15:33:11,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1046. [2020-08-21 15:33:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-08-21 15:33:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1220 transitions. [2020-08-21 15:33:11,978 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1220 transitions. Word has length 162 [2020-08-21 15:33:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:11,978 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1220 transitions. [2020-08-21 15:33:11,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:33:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1220 transitions. [2020-08-21 15:33:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-21 15:33:11,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:11,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:33:11,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:33:11,983 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:11,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1747787381, now seen corresponding path program 1 times [2020-08-21 15:33:11,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:11,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914437041] [2020-08-21 15:33:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,266 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:33:12,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:33:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:33:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:33:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:33:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:33:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:33:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:33:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:33:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:33:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 15:33:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 15:33:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:33:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:33:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:33:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:33:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 15:33:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 15:33:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-21 15:33:12,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914437041] [2020-08-21 15:33:12,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:33:12,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 15:33:12,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756890416] [2020-08-21 15:33:12,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 15:33:12,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:12,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 15:33:12,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:33:12,682 INFO L87 Difference]: Start difference. First operand 1046 states and 1220 transitions. Second operand 19 states. [2020-08-21 15:33:14,431 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:33:14,939 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:33:15,225 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:33:15,476 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:33:16,240 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:33:17,656 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:18,011 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:19,463 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:19,717 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:20,003 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:20,291 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:20,542 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:20,801 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:21,094 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:21,349 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:33:22,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:22,723 INFO L93 Difference]: Finished difference Result 2018 states and 2444 transitions. [2020-08-21 15:33:22,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-21 15:33:22,724 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 175 [2020-08-21 15:33:22,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:22,725 INFO L225 Difference]: With dead ends: 2018 [2020-08-21 15:33:22,725 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 15:33:22,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-21 15:33:22,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 15:33:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 15:33:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 15:33:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 15:33:22,733 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2020-08-21 15:33:22,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:22,733 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 15:33:22,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 15:33:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 15:33:22,734 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 15:33:22,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:33:22,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 15:33:23,634 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 29