/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:37:19,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:37:19,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:37:19,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:37:19,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:37:19,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:37:19,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:37:19,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:37:19,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:37:19,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:37:19,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:37:19,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:37:19,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:37:19,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:37:19,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:37:19,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:37:19,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:37:19,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:37:19,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:37:19,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:37:19,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:37:19,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:37:19,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:37:19,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:37:19,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:37:19,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:37:19,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:37:19,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:37:19,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:37:19,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:37:19,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:37:19,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:37:19,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:37:19,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:37:19,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:37:19,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:37:19,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:37:19,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:37:19,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:37:19,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:37:19,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:37:19,839 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 06:37:19,862 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:37:19,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:37:19,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:37:19,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:37:19,864 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:37:19,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:37:19,865 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:37:19,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:37:19,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:37:19,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:37:19,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:37:19,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:37:19,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:37:19,866 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:37:19,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:37:19,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:37:19,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:37:19,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:37:19,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:37:19,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:37:19,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:37:19,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:37:19,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:37:19,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:37:19,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:37:19,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:37:19,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:37:19,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:37:19,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:37:19,869 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=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:37:20,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:37:20,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:37:20,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:37:20,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:37:20,213 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:37:20,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-19 06:37:20,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb01a9f4c/0d9e1e4643fc4d8aadfa2fe219e9934f/FLAG30d178c7d [2020-08-19 06:37:20,869 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:37:20,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-19 06:37:20,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb01a9f4c/0d9e1e4643fc4d8aadfa2fe219e9934f/FLAG30d178c7d [2020-08-19 06:37:21,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb01a9f4c/0d9e1e4643fc4d8aadfa2fe219e9934f [2020-08-19 06:37:21,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:37:21,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:37:21,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:37:21,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:37:21,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:37:21,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:37:21" (1/1) ... [2020-08-19 06:37:21,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4d4318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21, skipping insertion in model container [2020-08-19 06:37:21,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:37:21" (1/1) ... [2020-08-19 06:37:21,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:37:21,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:37:21,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:37:21,752 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:37:21,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:37:21,869 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:37:21,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21 WrapperNode [2020-08-19 06:37:21,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:37:21,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:37:21,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:37:21,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:37:21,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21" (1/1) ... [2020-08-19 06:37:21,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21" (1/1) ... [2020-08-19 06:37:21,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21" (1/1) ... [2020-08-19 06:37:21,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21" (1/1) ... [2020-08-19 06:37:21,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21" (1/1) ... [2020-08-19 06:37:21,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21" (1/1) ... [2020-08-19 06:37:21,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21" (1/1) ... [2020-08-19 06:37:22,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:37:22,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:37:22,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:37:22,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:37:22,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21" (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 06:37:22,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:37:22,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:37:22,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:37:22,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:37:22,088 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:37:22,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:37:22,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:37:22,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:37:22,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:37:22,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:37:22,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:37:22,089 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:37:22,089 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:37:22,089 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:37:22,090 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 06:37:22,090 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:37:22,090 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:37:22,090 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:37:22,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:37:22,091 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:37:22,091 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:37:22,091 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:37:22,091 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 06:37:22,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 06:37:22,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 06:37:22,092 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:37:22,092 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:37:22,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:37:22,092 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:37:22,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:37:22,093 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:37:22,093 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:37:22,093 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:37:22,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:37:22,093 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:37:22,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:37:22,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:37:22,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 06:37:22,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:37:22,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:37:22,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:37:22,095 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:37:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:37:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:37:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:37:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:37:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:37:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:37:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:37:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:37:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:37:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:37:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:37:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:37:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:37:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:37:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:37:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:37:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:37:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:37:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:37:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:37:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:37:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:37:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:37:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:37:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:37:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:37:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:37:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:37:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:37:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:37:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 06:37:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:37:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:37:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:37:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:37:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 06:37:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:37:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:37:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:37:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:37:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 06:37:22,101 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 06:37:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:37:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 06:37:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:37:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:37:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:37:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:37:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:37:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:37:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:37:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:37:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:37:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:37:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:37:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:37:25,378 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:37:25,378 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:37:25,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:37:25 BoogieIcfgContainer [2020-08-19 06:37:25,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:37:25,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:37:25,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:37:25,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:37:25,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:37:21" (1/3) ... [2020-08-19 06:37:25,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7ffe3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:37:25, skipping insertion in model container [2020-08-19 06:37:25,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:37:21" (2/3) ... [2020-08-19 06:37:25,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7ffe3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:37:25, skipping insertion in model container [2020-08-19 06:37:25,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:37:25" (3/3) ... [2020-08-19 06:37:25,393 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2020-08-19 06:37:25,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:37:25,411 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:37:25,425 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:37:25,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:37:25,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:37:25,450 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:37:25,450 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:37:25,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:37:25,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:37:25,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:37:25,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:37:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-19 06:37:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 06:37:25,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:25,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:25,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:25,493 INFO L82 PathProgramCache]: Analyzing trace with hash 805370938, now seen corresponding path program 1 times [2020-08-19 06:37:25,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:25,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018696092] [2020-08-19 06:37:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:26,259 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:26,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:26,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:26,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:37:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:26,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:37:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:26,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018696092] [2020-08-19 06:37:26,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:26,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:37:26,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232223533] [2020-08-19 06:37:26,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:37:26,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:26,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:37:26,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:37:26,452 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-19 06:37:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:27,911 INFO L93 Difference]: Finished difference Result 328 states and 428 transitions. [2020-08-19 06:37:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:37:27,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 06:37:27,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:27,930 INFO L225 Difference]: With dead ends: 328 [2020-08-19 06:37:27,930 INFO L226 Difference]: Without dead ends: 181 [2020-08-19 06:37:27,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:37:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-19 06:37:28,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-19 06:37:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-19 06:37:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2020-08-19 06:37:28,095 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 51 [2020-08-19 06:37:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:28,096 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2020-08-19 06:37:28,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:37:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2020-08-19 06:37:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:37:28,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:28,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:28,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:37:28,107 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash -239223915, now seen corresponding path program 1 times [2020-08-19 06:37:28,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:28,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295790821] [2020-08-19 06:37:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:28,513 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:28,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:28,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:28,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:28,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:28,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:37:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:28,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:28,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:28,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295790821] [2020-08-19 06:37:28,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:28,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:37:28,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825739694] [2020-08-19 06:37:28,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:37:28,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:28,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:37:28,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:37:28,569 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand 5 states. [2020-08-19 06:37:29,154 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:30,278 INFO L93 Difference]: Finished difference Result 273 states and 339 transitions. [2020-08-19 06:37:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:37:30,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 06:37:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:30,283 INFO L225 Difference]: With dead ends: 273 [2020-08-19 06:37:30,284 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 06:37:30,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:37:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 06:37:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-19 06:37:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 06:37:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-19 06:37:30,326 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-08-19 06:37:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:30,326 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-19 06:37:30,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:37:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-19 06:37:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 06:37:30,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:30,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:30,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:37:30,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:30,329 INFO L82 PathProgramCache]: Analyzing trace with hash -2031785454, now seen corresponding path program 1 times [2020-08-19 06:37:30,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:30,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848646879] [2020-08-19 06:37:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:30,752 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:30,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:30,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:37:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:30,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 06:37:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:30,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848646879] [2020-08-19 06:37:30,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:30,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:37:30,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746805792] [2020-08-19 06:37:30,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:37:30,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:30,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:37:30,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:37:30,900 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 9 states. [2020-08-19 06:37:31,376 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:31,739 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:32,066 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:32,340 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:33,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:33,853 INFO L93 Difference]: Finished difference Result 282 states and 354 transitions. [2020-08-19 06:37:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:37:33,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 06:37:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:33,856 INFO L225 Difference]: With dead ends: 282 [2020-08-19 06:37:33,857 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 06:37:33,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:37:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 06:37:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-19 06:37:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 06:37:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2020-08-19 06:37:33,898 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 56 [2020-08-19 06:37:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:33,898 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2020-08-19 06:37:33,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:37:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2020-08-19 06:37:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 06:37:33,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:33,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:33,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:37:33,900 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:33,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1519881096, now seen corresponding path program 1 times [2020-08-19 06:37:33,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:33,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204700402] [2020-08-19 06:37:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,213 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:37:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 06:37:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 06:37:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:34,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204700402] [2020-08-19 06:37:34,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:34,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 06:37:34,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200718118] [2020-08-19 06:37:34,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:37:34,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:34,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:37:34,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:37:34,367 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 7 states. [2020-08-19 06:37:34,873 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:36,323 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:37,231 INFO L93 Difference]: Finished difference Result 382 states and 483 transitions. [2020-08-19 06:37:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:37:37,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-19 06:37:37,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:37,235 INFO L225 Difference]: With dead ends: 382 [2020-08-19 06:37:37,235 INFO L226 Difference]: Without dead ends: 271 [2020-08-19 06:37:37,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:37:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-19 06:37:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 225. [2020-08-19 06:37:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-19 06:37:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 258 transitions. [2020-08-19 06:37:37,299 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 258 transitions. Word has length 74 [2020-08-19 06:37:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:37,300 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 258 transitions. [2020-08-19 06:37:37,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:37:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 258 transitions. [2020-08-19 06:37:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 06:37:37,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:37,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:37,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:37:37,303 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:37,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1815815577, now seen corresponding path program 1 times [2020-08-19 06:37:37,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:37,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55262047] [2020-08-19 06:37:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,641 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:37,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:37:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 06:37:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 06:37:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:37,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55262047] [2020-08-19 06:37:37,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:37,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:37:37,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279455806] [2020-08-19 06:37:37,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:37:37,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:37,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:37:37,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:37:37,809 INFO L87 Difference]: Start difference. First operand 225 states and 258 transitions. Second operand 9 states. [2020-08-19 06:37:38,403 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:39,978 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:40,290 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:40,568 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:40,834 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:42,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:42,419 INFO L93 Difference]: Finished difference Result 666 states and 830 transitions. [2020-08-19 06:37:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 06:37:42,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 06:37:42,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:42,426 INFO L225 Difference]: With dead ends: 666 [2020-08-19 06:37:42,426 INFO L226 Difference]: Without dead ends: 469 [2020-08-19 06:37:42,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 06:37:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-19 06:37:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 398. [2020-08-19 06:37:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-08-19 06:37:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 456 transitions. [2020-08-19 06:37:42,531 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 456 transitions. Word has length 88 [2020-08-19 06:37:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:42,531 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 456 transitions. [2020-08-19 06:37:42,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:37:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 456 transitions. [2020-08-19 06:37:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 06:37:42,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:42,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:42,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:37:42,534 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1743532533, now seen corresponding path program 1 times [2020-08-19 06:37:42,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:42,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582406726] [2020-08-19 06:37:42,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:42,905 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:42,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:37:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 06:37:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:43,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582406726] [2020-08-19 06:37:43,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:43,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:37:43,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179614046] [2020-08-19 06:37:43,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:37:43,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:43,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:37:43,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:37:43,090 INFO L87 Difference]: Start difference. First operand 398 states and 456 transitions. Second operand 10 states. [2020-08-19 06:37:43,684 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:45,044 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:45,326 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:45,638 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:46,010 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:47,542 INFO L93 Difference]: Finished difference Result 874 states and 1071 transitions. [2020-08-19 06:37:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 06:37:47,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-19 06:37:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:47,548 INFO L225 Difference]: With dead ends: 874 [2020-08-19 06:37:47,548 INFO L226 Difference]: Without dead ends: 504 [2020-08-19 06:37:47,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 06:37:47,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-08-19 06:37:47,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 397. [2020-08-19 06:37:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-19 06:37:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2020-08-19 06:37:47,651 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 92 [2020-08-19 06:37:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:47,652 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2020-08-19 06:37:47,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:37:47,652 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2020-08-19 06:37:47,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:37:47,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:47,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:47,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:37:47,654 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:47,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:47,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1672267508, now seen corresponding path program 1 times [2020-08-19 06:37:47,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:47,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342175551] [2020-08-19 06:37:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:47,984 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:37:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 06:37:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:48,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342175551] [2020-08-19 06:37:48,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:48,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:37:48,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328150402] [2020-08-19 06:37:48,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:37:48,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:48,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:37:48,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:37:48,130 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 10 states. [2020-08-19 06:37:49,409 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:49,704 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 06:37:50,014 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:50,297 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:51,660 INFO L93 Difference]: Finished difference Result 877 states and 1082 transitions. [2020-08-19 06:37:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:37:51,661 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-19 06:37:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:51,667 INFO L225 Difference]: With dead ends: 877 [2020-08-19 06:37:51,668 INFO L226 Difference]: Without dead ends: 508 [2020-08-19 06:37:51,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:37:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-19 06:37:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 407. [2020-08-19 06:37:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-19 06:37:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 463 transitions. [2020-08-19 06:37:51,782 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 463 transitions. Word has length 93 [2020-08-19 06:37:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:51,783 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 463 transitions. [2020-08-19 06:37:51,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:37:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 463 transitions. [2020-08-19 06:37:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:37:51,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:51,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:51,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:37:51,785 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:51,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:51,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1599880950, now seen corresponding path program 1 times [2020-08-19 06:37:51,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:51,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090477260] [2020-08-19 06:37:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,101 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:52,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:37:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 06:37:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:52,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090477260] [2020-08-19 06:37:52,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:52,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:37:52,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305780380] [2020-08-19 06:37:52,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:37:52,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:52,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:37:52,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:37:52,278 INFO L87 Difference]: Start difference. First operand 407 states and 463 transitions. Second operand 12 states. [2020-08-19 06:37:53,021 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:53,306 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:53,587 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:54,327 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:54,623 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:54,917 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:56,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:56,556 INFO L93 Difference]: Finished difference Result 901 states and 1126 transitions. [2020-08-19 06:37:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:37:56,557 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-19 06:37:56,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:56,564 INFO L225 Difference]: With dead ends: 901 [2020-08-19 06:37:56,564 INFO L226 Difference]: Without dead ends: 522 [2020-08-19 06:37:56,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:37:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-19 06:37:56,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 415. [2020-08-19 06:37:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-19 06:37:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 471 transitions. [2020-08-19 06:37:56,633 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 471 transitions. Word has length 93 [2020-08-19 06:37:56,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:56,634 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 471 transitions. [2020-08-19 06:37:56,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:37:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 471 transitions. [2020-08-19 06:37:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 06:37:56,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:56,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:56,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:37:56,636 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:56,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:56,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1929646711, now seen corresponding path program 1 times [2020-08-19 06:37:56,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:56,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751787252] [2020-08-19 06:37:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:56,995 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:56,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:37:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 06:37:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:37:57,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751787252] [2020-08-19 06:37:57,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:57,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:37:57,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547473617] [2020-08-19 06:37:57,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:37:57,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:57,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:37:57,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:37:57,199 INFO L87 Difference]: Start difference. First operand 415 states and 471 transitions. Second operand 8 states. [2020-08-19 06:37:57,772 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:58,438 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:01,694 INFO L93 Difference]: Finished difference Result 1240 states and 1603 transitions. [2020-08-19 06:38:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 06:38:01,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 06:38:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:01,704 INFO L225 Difference]: With dead ends: 1240 [2020-08-19 06:38:01,704 INFO L226 Difference]: Without dead ends: 853 [2020-08-19 06:38:01,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 06:38:01,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-19 06:38:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 721. [2020-08-19 06:38:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-08-19 06:38:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 849 transitions. [2020-08-19 06:38:01,836 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 849 transitions. Word has length 93 [2020-08-19 06:38:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:01,836 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 849 transitions. [2020-08-19 06:38:01,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:38:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 849 transitions. [2020-08-19 06:38:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 06:38:01,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:01,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:38:01,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:38:01,842 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:01,842 INFO L82 PathProgramCache]: Analyzing trace with hash 446997693, now seen corresponding path program 1 times [2020-08-19 06:38:01,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:01,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736124811] [2020-08-19 06:38:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,269 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:02,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:38:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 06:38:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 06:38:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 06:38:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:02,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736124811] [2020-08-19 06:38:02,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:02,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:38:02,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081287553] [2020-08-19 06:38:02,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:38:02,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:02,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:38:02,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:38:02,411 INFO L87 Difference]: Start difference. First operand 721 states and 849 transitions. Second operand 8 states. [2020-08-19 06:38:02,953 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:06,042 INFO L93 Difference]: Finished difference Result 1414 states and 1816 transitions. [2020-08-19 06:38:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 06:38:06,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-19 06:38:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:06,072 INFO L225 Difference]: With dead ends: 1414 [2020-08-19 06:38:06,072 INFO L226 Difference]: Without dead ends: 1411 [2020-08-19 06:38:06,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-19 06:38:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2020-08-19 06:38:06,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1213. [2020-08-19 06:38:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-08-19 06:38:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1442 transitions. [2020-08-19 06:38:06,297 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1442 transitions. Word has length 97 [2020-08-19 06:38:06,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:06,298 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1442 transitions. [2020-08-19 06:38:06,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:38:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1442 transitions. [2020-08-19 06:38:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-19 06:38:06,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:06,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:06,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:38:06,303 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:06,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:06,304 INFO L82 PathProgramCache]: Analyzing trace with hash 350097324, now seen corresponding path program 1 times [2020-08-19 06:38:06,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:06,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167993707] [2020-08-19 06:38:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,767 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:38:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:38:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:06,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:38:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:38:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 06:38:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 06:38:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 06:38:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 06:38:07,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167993707] [2020-08-19 06:38:07,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:38:07,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 06:38:07,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173946313] [2020-08-19 06:38:07,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:38:07,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:07,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:38:07,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:38:07,166 INFO L87 Difference]: Start difference. First operand 1213 states and 1442 transitions. Second operand 13 states. [2020-08-19 06:38:08,159 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:08,466 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:08,761 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:38:09,911 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:12,114 INFO L93 Difference]: Finished difference Result 2164 states and 2684 transitions. [2020-08-19 06:38:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 06:38:12,115 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2020-08-19 06:38:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:12,121 INFO L225 Difference]: With dead ends: 2164 [2020-08-19 06:38:12,121 INFO L226 Difference]: Without dead ends: 1113 [2020-08-19 06:38:12,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-19 06:38:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-08-19 06:38:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 990. [2020-08-19 06:38:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-08-19 06:38:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1164 transitions. [2020-08-19 06:38:12,334 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1164 transitions. Word has length 160 [2020-08-19 06:38:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:12,334 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1164 transitions. [2020-08-19 06:38:12,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:38:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1164 transitions. [2020-08-19 06:38:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-19 06:38:12,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:12,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:12,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:38:12,342 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:12,342 INFO L82 PathProgramCache]: Analyzing trace with hash -524813042, now seen corresponding path program 1 times [2020-08-19 06:38:12,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:12,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445513706] [2020-08-19 06:38:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,702 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:12,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:38:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:38:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:38:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:38:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:38:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:38:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 06:38:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 06:38:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:38:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:13,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:13,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:38:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 06:38:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:13,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 06:38:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 06:38:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-19 06:38:13,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445513706] [2020-08-19 06:38:13,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:38:13,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 06:38:13,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905854658] [2020-08-19 06:38:13,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 06:38:13,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:13,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 06:38:13,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 06:38:13,076 INFO L87 Difference]: Start difference. First operand 990 states and 1164 transitions. Second operand 19 states. [2020-08-19 06:38:14,195 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:14,591 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:38:14,934 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:38:15,231 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:38:15,965 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:38:17,331 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:17,756 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:19,217 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:19,546 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:19,904 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:20,245 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:20,566 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:38:20,889 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191