/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:40:42,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:40:42,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:40:42,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:40:42,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:40:42,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:40:42,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:40:42,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:40:42,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:40:42,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:40:42,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:40:42,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:40:42,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:40:42,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:40:42,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:40:42,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:40:42,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:40:42,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:40:42,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:40:42,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:40:42,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:40:42,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:40:42,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:40:42,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:40:42,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:40:42,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:40:42,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:40:42,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:40:42,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:40:42,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:40:42,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:40:42,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:40:42,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:40:42,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:40:42,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:40:42,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:40:42,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:40:42,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:40:42,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:40:42,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:40:42,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:40:42,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:40:42,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:40:42,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:40:42,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:40:42,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:40:42,807 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:40:42,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:40:42,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:40:42,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:40:42,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:40:42,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:40:42,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:40:42,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:40:42,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:40:42,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:40:42,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:40:42,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:40:42,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:40:42,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:40:42,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:40:42,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:40:42,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:40:42,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:40:42,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:40:42,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:40:42,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:40:42,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:40:42,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:40:42,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:40:42,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:40:42,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:40:43,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:40:43,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:40:43,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:40:43,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:40:43,136 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:40:43,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-19 02:40:43,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0212405f4/acb8d54a55f044a48be00daecb61283c/FLAG81b2ad0e2 [2020-08-19 02:40:43,763 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:40:43,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-19 02:40:43,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0212405f4/acb8d54a55f044a48be00daecb61283c/FLAG81b2ad0e2 [2020-08-19 02:40:44,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0212405f4/acb8d54a55f044a48be00daecb61283c [2020-08-19 02:40:44,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:40:44,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:40:44,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:40:44,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:40:44,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:40:44,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:40:44" (1/1) ... [2020-08-19 02:40:44,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3451cfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44, skipping insertion in model container [2020-08-19 02:40:44,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:40:44" (1/1) ... [2020-08-19 02:40:44,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:40:44,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:40:44,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:40:44,690 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:40:44,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:40:44,816 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:40:44,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44 WrapperNode [2020-08-19 02:40:44,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:40:44,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:40:44,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:40:44,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:40:44,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44" (1/1) ... [2020-08-19 02:40:44,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44" (1/1) ... [2020-08-19 02:40:44,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44" (1/1) ... [2020-08-19 02:40:44,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44" (1/1) ... [2020-08-19 02:40:44,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44" (1/1) ... [2020-08-19 02:40:44,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44" (1/1) ... [2020-08-19 02:40:44,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44" (1/1) ... [2020-08-19 02:40:44,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:40:44,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:40:44,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:40:44,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:40:44,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:40:45,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:40:45,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:40:45,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:40:45,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:40:45,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:40:45,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:40:45,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:40:45,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:40:45,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:40:45,002 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:40:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:40:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:40:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:40:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:40:45,003 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:40:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:40:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:40:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:40:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:40:45,004 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:40:45,005 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:40:45,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:40:45,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:40:45,005 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:40:45,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:40:45,006 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:40:45,006 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:40:45,006 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:40:45,006 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:40:45,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:40:45,007 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:40:45,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:40:45,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:40:45,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 02:40:45,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 02:40:45,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 02:40:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:40:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:40:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:40:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:40:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:40:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:40:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:40:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:40:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:40:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:40:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:40:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:40:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:40:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:40:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:40:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:40:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:40:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:40:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:40:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:40:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:40:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:40:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:40:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:40:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:40:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:40:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:40:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:40:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:40:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:40:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:40:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:40:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 02:40:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:40:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:40:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:40:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:40:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:40:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:40:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:40:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:40:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:40:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:40:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:40:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:40:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:40:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:40:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 02:40:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 02:40:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:40:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:40:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:40:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:40:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:40:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:40:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:40:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:40:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:40:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:40:45,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:40:46,187 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:40:46,188 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:40:46,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:40:46 BoogieIcfgContainer [2020-08-19 02:40:46,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:40:46,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:40:46,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:40:46,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:40:46,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:40:44" (1/3) ... [2020-08-19 02:40:46,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdce73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:40:46, skipping insertion in model container [2020-08-19 02:40:46,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:40:44" (2/3) ... [2020-08-19 02:40:46,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdce73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:40:46, skipping insertion in model container [2020-08-19 02:40:46,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:40:46" (3/3) ... [2020-08-19 02:40:46,201 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-08-19 02:40:46,212 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:40:46,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:40:46,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:40:46,259 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:40:46,259 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:40:46,259 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:40:46,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:40:46,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:40:46,260 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:40:46,260 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:40:46,260 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:40:46,286 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-19 02:40:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 02:40:46,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:46,302 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] [2020-08-19 02:40:46,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2020-08-19 02:40:46,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:46,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813081352] [2020-08-19 02:40:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:46,986 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:46,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:40:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:40:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:40:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:40:47,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813081352] [2020-08-19 02:40:47,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:47,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:40:47,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961368558] [2020-08-19 02:40:47,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:40:47,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:47,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:40:47,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:40:47,150 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-19 02:40:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:48,313 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2020-08-19 02:40:48,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:40:48,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 02:40:48,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:48,331 INFO L225 Difference]: With dead ends: 308 [2020-08-19 02:40:48,331 INFO L226 Difference]: Without dead ends: 170 [2020-08-19 02:40:48,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:40:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-19 02:40:48,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2020-08-19 02:40:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 02:40:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-08-19 02:40:48,458 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2020-08-19 02:40:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:48,459 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-08-19 02:40:48,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:40:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-08-19 02:40:48,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 02:40:48,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:48,472 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] [2020-08-19 02:40:48,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:40:48,473 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:48,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:48,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2020-08-19 02:40:48,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:48,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035272116] [2020-08-19 02:40:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,926 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:40:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:40:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:48,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:40:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:40:49,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035272116] [2020-08-19 02:40:49,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:49,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:40:49,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049658398] [2020-08-19 02:40:49,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:40:49,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:49,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:40:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:40:49,006 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2020-08-19 02:40:49,540 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:40:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:50,439 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-08-19 02:40:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:40:50,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 02:40:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:50,450 INFO L225 Difference]: With dead ends: 244 [2020-08-19 02:40:50,451 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 02:40:50,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:40:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 02:40:50,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2020-08-19 02:40:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-19 02:40:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-08-19 02:40:50,494 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2020-08-19 02:40:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:50,495 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-08-19 02:40:50,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:40:50,495 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-08-19 02:40:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 02:40:50,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:50,497 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] [2020-08-19 02:40:50,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:40:50,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:50,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2020-08-19 02:40:50,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:50,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116882110] [2020-08-19 02:40:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,845 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:50,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:40:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:40:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:40:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:40:50,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116882110] [2020-08-19 02:40:50,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:50,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:40:50,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608074177] [2020-08-19 02:40:50,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:40:50,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:50,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:40:50,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:40:50,954 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-08-19 02:40:51,354 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:40:51,694 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:51,968 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:52,214 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:53,146 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:40:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:54,827 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2020-08-19 02:40:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:40:54,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 02:40:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:54,834 INFO L225 Difference]: With dead ends: 435 [2020-08-19 02:40:54,834 INFO L226 Difference]: Without dead ends: 333 [2020-08-19 02:40:54,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:40:54,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-19 02:40:54,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-19 02:40:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-19 02:40:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2020-08-19 02:40:54,899 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2020-08-19 02:40:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:54,899 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2020-08-19 02:40:54,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:40:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2020-08-19 02:40:54,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 02:40:54,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:54,902 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] [2020-08-19 02:40:54,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:40:54,902 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:54,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2020-08-19 02:40:54,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:54,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244733288] [2020-08-19 02:40:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,227 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:55,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:40:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:40:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:40:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 02:40:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:40:55,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244733288] [2020-08-19 02:40:55,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:55,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:40:55,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614396101] [2020-08-19 02:40:55,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:40:55,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:55,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:40:55,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:40:55,407 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2020-08-19 02:40:55,758 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:40:56,421 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:57,370 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:57,602 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:40:57,884 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:40:58,173 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:40:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:40:58,625 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2020-08-19 02:40:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:40:58,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 02:40:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:40:58,633 INFO L225 Difference]: With dead ends: 679 [2020-08-19 02:40:58,633 INFO L226 Difference]: Without dead ends: 439 [2020-08-19 02:40:58,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:40:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-19 02:40:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2020-08-19 02:40:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-19 02:40:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2020-08-19 02:40:58,720 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2020-08-19 02:40:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:40:58,721 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2020-08-19 02:40:58,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:40:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2020-08-19 02:40:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-19 02:40:58,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:40:58,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:40:58,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:40:58,724 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:40:58,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:40:58,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2020-08-19 02:40:58,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:40:58,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685672238] [2020-08-19 02:40:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:40:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,031 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:40:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:40:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:40:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:40:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:40:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:40:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:40:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:40:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:40:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:40:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:40:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:40:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:40:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 02:40:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:40:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:40:59,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685672238] [2020-08-19 02:40:59,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:40:59,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:40:59,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804414293] [2020-08-19 02:40:59,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:40:59,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:40:59,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:40:59,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:40:59,227 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2020-08-19 02:40:59,682 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:00,657 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:00,903 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:01,166 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:01,441 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:02,762 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2020-08-19 02:41:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:41:02,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-19 02:41:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:02,770 INFO L225 Difference]: With dead ends: 1185 [2020-08-19 02:41:02,770 INFO L226 Difference]: Without dead ends: 834 [2020-08-19 02:41:02,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:41:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-19 02:41:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2020-08-19 02:41:02,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-19 02:41:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2020-08-19 02:41:02,942 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2020-08-19 02:41:02,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:02,943 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2020-08-19 02:41:02,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:41:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2020-08-19 02:41:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-19 02:41:02,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:02,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:02,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:41:02,947 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:02,947 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2020-08-19 02:41:02,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:02,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245038105] [2020-08-19 02:41:02,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,216 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:03,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:41:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:41:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:41:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 02:41:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:03,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245038105] [2020-08-19 02:41:03,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:03,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:41:03,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569878441] [2020-08-19 02:41:03,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:41:03,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:03,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:41:03,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:41:03,324 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2020-08-19 02:41:04,337 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:04,565 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:04,959 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:05,261 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:05,931 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2020-08-19 02:41:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:41:05,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-19 02:41:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:05,938 INFO L225 Difference]: With dead ends: 1536 [2020-08-19 02:41:05,938 INFO L226 Difference]: Without dead ends: 847 [2020-08-19 02:41:05,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:41:05,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-08-19 02:41:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2020-08-19 02:41:06,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-08-19 02:41:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2020-08-19 02:41:06,080 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2020-08-19 02:41:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:06,081 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2020-08-19 02:41:06,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:41:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2020-08-19 02:41:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-19 02:41:06,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:06,085 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:06,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:41:06,085 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:06,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:06,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2020-08-19 02:41:06,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:06,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83901216] [2020-08-19 02:41:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,375 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:06,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:41:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:41:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:41:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 02:41:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:06,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83901216] [2020-08-19 02:41:06,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:06,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:41:06,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902160282] [2020-08-19 02:41:06,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:41:06,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:06,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:41:06,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:41:06,560 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2020-08-19 02:41:07,108 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:07,329 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:07,554 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:08,313 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:08,686 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:09,007 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:10,052 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2020-08-19 02:41:10,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:41:10,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-08-19 02:41:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:10,059 INFO L225 Difference]: With dead ends: 1360 [2020-08-19 02:41:10,059 INFO L226 Difference]: Without dead ends: 651 [2020-08-19 02:41:10,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:41:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-08-19 02:41:10,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2020-08-19 02:41:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-08-19 02:41:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2020-08-19 02:41:10,161 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2020-08-19 02:41:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:10,162 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2020-08-19 02:41:10,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:41:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2020-08-19 02:41:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-19 02:41:10,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:10,166 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:10,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:41:10,166 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2020-08-19 02:41:10,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:10,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471495615] [2020-08-19 02:41:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,520 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:10,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:41:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:41:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 02:41:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 02:41:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:10,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471495615] [2020-08-19 02:41:10,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:10,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:41:10,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812367937] [2020-08-19 02:41:10,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:41:10,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:10,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:41:10,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:41:10,717 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2020-08-19 02:41:11,194 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:11,937 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:12,581 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:12,926 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:13,190 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:13,515 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:13,765 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:15,071 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:15,336 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:15,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:15,941 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2020-08-19 02:41:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 02:41:15,945 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-08-19 02:41:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:15,953 INFO L225 Difference]: With dead ends: 1691 [2020-08-19 02:41:15,953 INFO L226 Difference]: Without dead ends: 1313 [2020-08-19 02:41:15,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 02:41:15,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-19 02:41:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2020-08-19 02:41:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-19 02:41:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2020-08-19 02:41:16,159 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2020-08-19 02:41:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:16,163 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2020-08-19 02:41:16,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:41:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2020-08-19 02:41:16,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 02:41:16,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:16,167 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:16,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:41:16,168 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:16,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:16,168 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2020-08-19 02:41:16,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:16,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329230206] [2020-08-19 02:41:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,493 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:41:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:41:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:41:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 02:41:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 02:41:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 02:41:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 02:41:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-19 02:41:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-19 02:41:16,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329230206] [2020-08-19 02:41:16,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:41:16,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:41:16,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791367793] [2020-08-19 02:41:16,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:41:16,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:16,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:41:16,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:41:16,770 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 16 states. [2020-08-19 02:41:17,309 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:17,630 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:41:17,889 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:41:18,160 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:41:18,768 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:19,070 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:19,436 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:41:19,709 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:41:20,826 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:21,311 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:21,622 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:21,942 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:22,420 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:41:22,948 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:41:23,213 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:23,510 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:23,783 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:24,243 INFO L93 Difference]: Finished difference Result 2225 states and 2688 transitions. [2020-08-19 02:41:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 02:41:24,244 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-08-19 02:41:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:24,252 INFO L225 Difference]: With dead ends: 2225 [2020-08-19 02:41:24,252 INFO L226 Difference]: Without dead ends: 1222 [2020-08-19 02:41:24,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-19 02:41:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-08-19 02:41:24,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1102. [2020-08-19 02:41:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-19 02:41:24,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1268 transitions. [2020-08-19 02:41:24,451 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1268 transitions. Word has length 149 [2020-08-19 02:41:24,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:24,451 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1268 transitions. [2020-08-19 02:41:24,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:41:24,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1268 transitions. [2020-08-19 02:41:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-19 02:41:24,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:24,460 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:24,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:41:24,460 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:24,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:24,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1576976523, now seen corresponding path program 1 times [2020-08-19 02:41:24,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:24,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079596152] [2020-08-19 02:41:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,850 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:24,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:41:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:41:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:24,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:41:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:41:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:41:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-19 02:41:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:41:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-19 02:41:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-19 02:41:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:41:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-19 02:41:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-19 02:41:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-19 02:41:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-19 02:41:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-19 02:41:25,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079596152] [2020-08-19 02:41:25,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:41:25,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:41:25,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621406985] [2020-08-19 02:41:25,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:41:25,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:25,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:41:25,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:41:25,561 INFO L87 Difference]: Start difference. First operand 1102 states and 1268 transitions. Second operand 16 states. [2020-08-19 02:41:27,247 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:27,540 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:27,792 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:28,030 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:29,226 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:30,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:30,957 INFO L93 Difference]: Finished difference Result 3031 states and 3632 transitions. [2020-08-19 02:41:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 02:41:30,958 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2020-08-19 02:41:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:30,970 INFO L225 Difference]: With dead ends: 3031 [2020-08-19 02:41:30,970 INFO L226 Difference]: Without dead ends: 1752 [2020-08-19 02:41:30,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 02:41:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-08-19 02:41:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1430. [2020-08-19 02:41:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-08-19 02:41:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1674 transitions. [2020-08-19 02:41:31,308 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1674 transitions. Word has length 302 [2020-08-19 02:41:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:31,309 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1674 transitions. [2020-08-19 02:41:31,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:41:31,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1674 transitions. [2020-08-19 02:41:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-19 02:41:31,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:31,320 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:31,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:41:31,320 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:31,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1865964208, now seen corresponding path program 1 times [2020-08-19 02:41:31,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:31,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644242379] [2020-08-19 02:41:31,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,762 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:31,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:41:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:41:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:41:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:41:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:41:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:31,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:41:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 02:41:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:41:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-19 02:41:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-19 02:41:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:41:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-19 02:41:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 02:41:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-19 02:41:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-19 02:41:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-19 02:41:32,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644242379] [2020-08-19 02:41:32,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:41:32,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 02:41:32,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711990098] [2020-08-19 02:41:32,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 02:41:32,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:32,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 02:41:32,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-19 02:41:32,178 INFO L87 Difference]: Start difference. First operand 1430 states and 1674 transitions. Second operand 17 states. [2020-08-19 02:41:33,078 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:33,408 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:33,679 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:33,931 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:41:34,593 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:35,664 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:35,910 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:36,380 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:37,050 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:37,711 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:37,961 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:38,677 INFO L93 Difference]: Finished difference Result 2555 states and 3056 transitions. [2020-08-19 02:41:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-19 02:41:38,677 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2020-08-19 02:41:38,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:38,687 INFO L225 Difference]: With dead ends: 2555 [2020-08-19 02:41:38,687 INFO L226 Difference]: Without dead ends: 1457 [2020-08-19 02:41:38,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-19 02:41:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-08-19 02:41:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1403. [2020-08-19 02:41:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-08-19 02:41:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1626 transitions. [2020-08-19 02:41:38,944 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1626 transitions. Word has length 308 [2020-08-19 02:41:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:38,945 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 1626 transitions. [2020-08-19 02:41:38,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 02:41:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1626 transitions. [2020-08-19 02:41:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-19 02:41:38,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:38,956 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:41:38,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:41:38,957 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:38,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:38,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2055130084, now seen corresponding path program 1 times [2020-08-19 02:41:38,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:38,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075257622] [2020-08-19 02:41:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,318 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:39,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat