/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:37:52,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:37:52,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:37:52,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:37:52,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:37:52,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:37:52,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:37:52,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:37:52,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:37:52,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:37:52,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:37:52,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:37:52,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:37:52,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:37:52,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:37:52,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:37:52,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:37:52,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:37:52,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:37:52,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:37:52,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:37:52,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:37:52,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:37:52,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:37:52,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:37:52,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:37:52,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:37:52,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:37:52,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:37:52,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:37:52,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:37:52,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:37:52,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:37:52,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:37:52,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:37:52,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:37:52,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:37:52,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:37:52,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:37:52,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:37:52,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:37:52,791 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 23:37:52,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:37:52,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:37:52,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:37:52,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:37:52,843 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:37:52,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:37:52,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:37:52,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:37:52,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:37:52,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:37:52,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:37:52,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:37:52,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:37:52,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:37:52,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:37:52,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:37:52,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:37:52,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:37:52,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:37:52,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:37:52,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:37:52,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:37:52,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:37:52,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:37:52,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:37:52,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:37:52,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:37:52,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:37:52,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:37:52,852 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:37:53,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:37:53,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:37:53,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:37:53,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:37:53,252 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:37:53,253 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 23:37:53,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/446fb242d/21892bcfa1924b53b8a5f9360e394978/FLAG33e4daeec [2020-08-21 23:37:53,866 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:37:53,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 23:37:53,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/446fb242d/21892bcfa1924b53b8a5f9360e394978/FLAG33e4daeec [2020-08-21 23:37:54,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/446fb242d/21892bcfa1924b53b8a5f9360e394978 [2020-08-21 23:37:54,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:37:54,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:37:54,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:37:54,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:37:54,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:37:54,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:37:54" (1/1) ... [2020-08-21 23:37:54,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d8e50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54, skipping insertion in model container [2020-08-21 23:37:54,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:37:54" (1/1) ... [2020-08-21 23:37:54,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:37:54,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:37:54,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:54,758 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:37:54,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:54,874 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:37:54,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54 WrapperNode [2020-08-21 23:37:54,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:37:54,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:37:54,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:37:54,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:37:54,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54" (1/1) ... [2020-08-21 23:37:54,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54" (1/1) ... [2020-08-21 23:37:54,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54" (1/1) ... [2020-08-21 23:37:54,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54" (1/1) ... [2020-08-21 23:37:54,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54" (1/1) ... [2020-08-21 23:37:54,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54" (1/1) ... [2020-08-21 23:37:54,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54" (1/1) ... [2020-08-21 23:37:54,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:37:54,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:37:54,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:37:54,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:37:54,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54" (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 23:37:55,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:37:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:37:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:37:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:37:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:37:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:37:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:37:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:37:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:37:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:37:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:37:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 23:37:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:37:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:37:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:37:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:37:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:37:55,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:37:55,041 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 23:37:55,041 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:37:55,041 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:37:55,041 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:37:55,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:37:55,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:37:55,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:37:55,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:37:55,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:37:55,042 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:37:55,042 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:37:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:37:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:37:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:37:55,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:37:55,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:37:55,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:37:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:37:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:37:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:37:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:37:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:37:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:37:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:37:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:37:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:37:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:37:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:37:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:37:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:37:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:37:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:37:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 23:37:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:37:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:37:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:37:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:37:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:37:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:37:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:37:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:37:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:37:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:37:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 23:37:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:37:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:37:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:37:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:37:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:37:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:37:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:37:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:37:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:37:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:37:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:37:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:37:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:37:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:37:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:37:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:37:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:37:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:37:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:37:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:37:56,170 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:37:56,170 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:37:56,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:37:56 BoogieIcfgContainer [2020-08-21 23:37:56,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:37:56,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:37:56,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:37:56,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:37:56,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:37:54" (1/3) ... [2020-08-21 23:37:56,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a899a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:37:56, skipping insertion in model container [2020-08-21 23:37:56,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:54" (2/3) ... [2020-08-21 23:37:56,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a899a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:37:56, skipping insertion in model container [2020-08-21 23:37:56,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:37:56" (3/3) ... [2020-08-21 23:37:56,185 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-21 23:37:56,195 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:37:56,205 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:37:56,218 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:37:56,243 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:37:56,243 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:37:56,244 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:37:56,244 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:37:56,244 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:37:56,244 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:37:56,244 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:37:56,245 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:37:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 23:37:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 23:37:56,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:56,277 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 23:37:56,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-21 23:37:56,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:56,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836274450] [2020-08-21 23:37:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:56,999 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:57,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:57,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:57,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:37:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:57,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:37:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:37:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:57,082 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 23:37:57,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836274450] [2020-08-21 23:37:57,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:57,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:37:57,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654474866] [2020-08-21 23:37:57,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:37:57,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:57,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:37:57,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:37:57,110 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 23:37:58,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:58,255 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-21 23:37:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:37:58,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 23:37:58,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:58,273 INFO L225 Difference]: With dead ends: 296 [2020-08-21 23:37:58,273 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 23:37:58,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:37:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 23:37:58,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-21 23:37:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 23:37:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-21 23:37:58,376 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-21 23:37:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:58,377 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-21 23:37:58,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:37:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-21 23:37:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 23:37:58,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:58,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:58,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:37:58,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:58,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:58,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-21 23:37:58,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:58,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630541996] [2020-08-21 23:37:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:58,817 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:58,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:58,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:58,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:58,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:58,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:37:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:58,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:37:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:58,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:37:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:58,881 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 23:37:58,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630541996] [2020-08-21 23:37:58,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:58,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:37:58,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069011912] [2020-08-21 23:37:58,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:37:58,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:58,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:37:58,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:37:58,887 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-21 23:37:59,278 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:00,027 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-21 23:38:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:38:00,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 23:38:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:00,036 INFO L225 Difference]: With dead ends: 225 [2020-08-21 23:38:00,036 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 23:38:00,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:38:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 23:38:00,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 23:38:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 23:38:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-21 23:38:00,083 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-21 23:38:00,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:00,084 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-21 23:38:00,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:38:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-21 23:38:00,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 23:38:00,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:00,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:00,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:38:00,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:00,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:00,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-21 23:38:00,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:00,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294081567] [2020-08-21 23:38:00,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:00,496 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:00,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:00,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:00,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:00,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:38:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:38:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:38:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:00,644 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 23:38:00,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294081567] [2020-08-21 23:38:00,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:00,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:38:00,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106604679] [2020-08-21 23:38:00,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:38:00,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:00,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:38:00,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:38:00,653 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-21 23:38:01,031 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:01,331 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:01,579 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:01,810 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:02,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:02,912 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-21 23:38:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:38:02,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 23:38:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:02,922 INFO L225 Difference]: With dead ends: 238 [2020-08-21 23:38:02,922 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 23:38:02,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:38:02,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 23:38:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 23:38:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 23:38:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-21 23:38:02,958 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-21 23:38:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:02,959 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-21 23:38:02,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:38:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-21 23:38:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 23:38:02,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:02,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:02,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:38:02,961 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-21 23:38:02,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:02,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720919940] [2020-08-21 23:38:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,222 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:38:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:38:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 23:38:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 23:38:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 23:38:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,319 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 23:38:03,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720919940] [2020-08-21 23:38:03,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:03,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:38:03,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035379145] [2020-08-21 23:38:03,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:38:03,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:03,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:38:03,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:38:03,323 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-21 23:38:03,648 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:04,847 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:05,472 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-21 23:38:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:38:05,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-21 23:38:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:05,485 INFO L225 Difference]: With dead ends: 338 [2020-08-21 23:38:05,487 INFO L226 Difference]: Without dead ends: 244 [2020-08-21 23:38:05,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:38:05,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-21 23:38:05,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-21 23:38:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-21 23:38:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-21 23:38:05,540 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-21 23:38:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:05,541 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-21 23:38:05,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:38:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-21 23:38:05,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-21 23:38:05,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:05,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:05,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:38:05,544 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:05,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:05,544 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-21 23:38:05,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:05,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835054085] [2020-08-21 23:38:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,808 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:38:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:38:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:38:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 23:38:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 23:38:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 23:38:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:05,900 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 23:38:05,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835054085] [2020-08-21 23:38:05,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:05,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:38:05,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136777791] [2020-08-21 23:38:05,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:38:05,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:05,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:38:05,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:38:05,903 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-21 23:38:06,335 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:07,781 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:08,040 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:08,274 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:08,494 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:09,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:09,121 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-21 23:38:09,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:38:09,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-21 23:38:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:09,128 INFO L225 Difference]: With dead ends: 555 [2020-08-21 23:38:09,129 INFO L226 Difference]: Without dead ends: 378 [2020-08-21 23:38:09,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:38:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-21 23:38:09,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-21 23:38:09,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 23:38:09,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-21 23:38:09,234 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-21 23:38:09,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:09,235 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-21 23:38:09,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:38:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-21 23:38:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 23:38:09,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:09,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:09,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:38:09,238 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:09,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:09,238 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-21 23:38:09,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:09,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435864132] [2020-08-21 23:38:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,502 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:09,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:38:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:38:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:38:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:38:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:38:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 23:38:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 23:38:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,626 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 23:38:09,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435864132] [2020-08-21 23:38:09,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:09,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:38:09,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817359084] [2020-08-21 23:38:09,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:38:09,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:38:09,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:38:09,629 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-21 23:38:10,013 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:10,493 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:12,068 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:13,535 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-21 23:38:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 23:38:13,536 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 23:38:13,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:13,542 INFO L225 Difference]: With dead ends: 815 [2020-08-21 23:38:13,543 INFO L226 Difference]: Without dead ends: 627 [2020-08-21 23:38:13,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-21 23:38:13,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-21 23:38:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-21 23:38:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 23:38:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-21 23:38:13,644 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-21 23:38:13,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:13,645 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-21 23:38:13,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:38:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-21 23:38:13,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 23:38:13,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:13,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:13,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:38:13,648 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:13,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-21 23:38:13,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:13,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935732453] [2020-08-21 23:38:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:13,995 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:13,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:38:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:38:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:38:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:38:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:38:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 23:38:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 23:38:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:14,133 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 23:38:14,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935732453] [2020-08-21 23:38:14,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:14,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:38:14,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127156016] [2020-08-21 23:38:14,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:38:14,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:14,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:38:14,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:38:14,138 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-21 23:38:15,096 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:15,329 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:15,575 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:16,474 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-21 23:38:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:38:16,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-21 23:38:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:16,479 INFO L225 Difference]: With dead ends: 1006 [2020-08-21 23:38:16,479 INFO L226 Difference]: Without dead ends: 601 [2020-08-21 23:38:16,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:38:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-21 23:38:16,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-21 23:38:16,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 23:38:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-21 23:38:16,592 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-21 23:38:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:16,593 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-21 23:38:16,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:38:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-21 23:38:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 23:38:16,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:16,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:16,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:38:16,595 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:16,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-21 23:38:16,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:16,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863282839] [2020-08-21 23:38:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,859 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:16,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:38:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:38:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:38:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:38:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:38:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 23:38:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:16,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 23:38:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:17,003 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 23:38:17,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863282839] [2020-08-21 23:38:17,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:17,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:38:17,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593944857] [2020-08-21 23:38:17,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:38:17,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:17,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:38:17,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:38:17,010 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-21 23:38:17,556 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:17,818 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:18,055 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:18,742 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:18,980 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:38:19,252 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:19,478 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:20,463 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-21 23:38:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 23:38:20,466 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 23:38:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:20,471 INFO L225 Difference]: With dead ends: 1144 [2020-08-21 23:38:20,471 INFO L226 Difference]: Without dead ends: 612 [2020-08-21 23:38:20,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 23:38:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-21 23:38:20,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-21 23:38:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-21 23:38:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-21 23:38:20,589 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-21 23:38:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:20,590 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-21 23:38:20,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:38:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-21 23:38:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 23:38:20,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:20,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:20,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:38:20,592 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:20,593 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-21 23:38:20,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:20,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683743480] [2020-08-21 23:38:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,849 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:38:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:38:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:38:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:20,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:38:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:21,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:21,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 23:38:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:21,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 23:38:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 23:38:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 23:38:21,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683743480] [2020-08-21 23:38:21,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:38:21,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 23:38:21,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145953219] [2020-08-21 23:38:21,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:38:21,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:21,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:38:21,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:38:21,103 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-21 23:38:21,794 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:22,537 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:23,345 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:38:23,653 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:38:23,949 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:38:24,219 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:38:24,504 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:38:24,761 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:38:25,217 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-21 23:38:25,464 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:38:25,749 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:38:26,032 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 23:38:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:28,006 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-21 23:38:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 23:38:28,007 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 23:38:28,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:28,016 INFO L225 Difference]: With dead ends: 1664 [2020-08-21 23:38:28,016 INFO L226 Difference]: Without dead ends: 1125 [2020-08-21 23:38:28,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-21 23:38:28,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-21 23:38:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-21 23:38:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-21 23:38:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-21 23:38:28,223 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-21 23:38:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:28,224 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-21 23:38:28,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:38:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-21 23:38:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 23:38:28,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:28,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:28,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:38:28,227 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:28,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:28,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-21 23:38:28,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:28,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847863009] [2020-08-21 23:38:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,560 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:28,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:38:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:38:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:38:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:38:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:38:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 23:38:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 23:38:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 23:38:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 23:38:28,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847863009] [2020-08-21 23:38:28,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:28,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 23:38:28,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125738416] [2020-08-21 23:38:28,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 23:38:28,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:28,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 23:38:28,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:38:28,726 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-21 23:38:29,299 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:29,540 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:29,767 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:30,344 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:31,127 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:31,480 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:32,104 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:32,388 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:38:32,670 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:38:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:34,470 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-21 23:38:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 23:38:34,471 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-21 23:38:34,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:34,478 INFO L225 Difference]: With dead ends: 2205 [2020-08-21 23:38:34,478 INFO L226 Difference]: Without dead ends: 1167 [2020-08-21 23:38:34,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 23:38:34,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-21 23:38:34,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-21 23:38:34,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-21 23:38:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-21 23:38:34,713 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-21 23:38:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:34,714 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-21 23:38:34,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 23:38:34,714 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-21 23:38:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 23:38:34,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:34,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:34,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:38:34,718 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:34,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:34,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-21 23:38:34,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:34,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050943531] [2020-08-21 23:38:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,086 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:35,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:38:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:38:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:38:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:38:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:38:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 23:38:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 23:38:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 23:38:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:38:35,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050943531] [2020-08-21 23:38:35,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:35,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 23:38:35,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58542910] [2020-08-21 23:38:35,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:38:35,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:35,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:38:35,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:38:35,222 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-21 23:38:36,196 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:36,444 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:36,671 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:37,847 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:38,379 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:38,715 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:38:39,005 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:38:39,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:39,749 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-21 23:38:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 23:38:39,750 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-21 23:38:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:39,751 INFO L225 Difference]: With dead ends: 1688 [2020-08-21 23:38:39,751 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 23:38:39,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-21 23:38:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 23:38:39,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 23:38:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 23:38:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 23:38:39,758 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-21 23:38:39,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:39,758 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 23:38:39,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 23:38:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 23:38:39,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 23:38:39,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:38:39,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 23:38:40,951 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 23:38:43,448 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 23:38:43,894 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 23:38:44,239 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 23:38:44,748 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 23:38:45,799 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 23:38:46,962 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-21 23:38:47,142 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 23:38:47,627 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-21 23:38:47,802 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-21 23:38:48,077 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-21 23:38:48,248 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-21 23:38:49,384 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-21 23:38:49,554 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 23:38:50,424 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 23:38:50,728 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27 [2020-08-21 23:38:51,320 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30