/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:33:43,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:33:43,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:33:44,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:33:44,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:33:44,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:33:44,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:33:44,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:33:44,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:33:44,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:33:44,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:33:44,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:33:44,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:33:44,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:33:44,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:33:44,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:33:44,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:33:44,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:33:44,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:33:44,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:33:44,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:33:44,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:33:44,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:33:44,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:33:44,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:33:44,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:33:44,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:33:44,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:33:44,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:33:44,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:33:44,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:33:44,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:33:44,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:33:44,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:33:44,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:33:44,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:33:44,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:33:44,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:33:44,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:33:44,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:33:44,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:33:44,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 23:33:44,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:33:44,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:33:44,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:33:44,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:33:44,144 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:33:44,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:33:44,145 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:33:44,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:33:44,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:33:44,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:33:44,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:33:44,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:33:44,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:33:44,147 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:33:44,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:33:44,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:33:44,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:33:44,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:33:44,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:33:44,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:33:44,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:33:44,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:33:44,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:33:44,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:33:44,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:33:44,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:33:44,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:33:44,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:33:44,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:33:44,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:33:44,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:33:44,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:33:44,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:33:44,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:33:44,495 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:33:44,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-08-21 23:33:44,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/722c392d5/7e0572c9710b4e91a857093f820d863d/FLAG684f92160 [2020-08-21 23:33:45,119 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:33:45,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-08-21 23:33:45,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/722c392d5/7e0572c9710b4e91a857093f820d863d/FLAG684f92160 [2020-08-21 23:33:45,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/722c392d5/7e0572c9710b4e91a857093f820d863d [2020-08-21 23:33:45,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:33:45,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:33:45,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:33:45,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:33:45,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:33:45,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:33:45" (1/1) ... [2020-08-21 23:33:45,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2876d654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:45, skipping insertion in model container [2020-08-21 23:33:45,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:33:45" (1/1) ... [2020-08-21 23:33:45,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:33:45,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:33:45,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:33:45,928 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:33:46,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:33:46,041 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:33:46,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46 WrapperNode [2020-08-21 23:33:46,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:33:46,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:33:46,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:33:46,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:33:46,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46" (1/1) ... [2020-08-21 23:33:46,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46" (1/1) ... [2020-08-21 23:33:46,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46" (1/1) ... [2020-08-21 23:33:46,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46" (1/1) ... [2020-08-21 23:33:46,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46" (1/1) ... [2020-08-21 23:33:46,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46" (1/1) ... [2020-08-21 23:33:46,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46" (1/1) ... [2020-08-21 23:33:46,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:33:46,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:33:46,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:33:46,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:33:46,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:33:46,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:33:46,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:33:46,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:33:46,242 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:33:46,242 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:33:46,243 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:33:46,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:33:46,243 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:33:46,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:33:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:33:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:33:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 23:33:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:33:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:33:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:33:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:33:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:33:46,246 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:33:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:33:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:33:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:33:46,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:33:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:33:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:33:46,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:33:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:33:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:33:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:33:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:33:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:33:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 23:33:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:33:46,250 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 23:33:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:33:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:33:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:33:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:33:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:33:46,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:33:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:33:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:33:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:33:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:33:46,252 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:33:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:33:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:33:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:33:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:33:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:33:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:33:46,253 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:33:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:33:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 23:33:46,254 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:33:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:33:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:33:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:33:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:33:46,255 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:33:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:33:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:33:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:33:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:33:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:33:46,256 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:33:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:33:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:33:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:33:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:33:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:33:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:33:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:33:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:33:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:33:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:33:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:33:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:33:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:33:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:33:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:33:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:33:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:33:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:33:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:33:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:33:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:33:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 23:33:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:33:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 23:33:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:33:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:33:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:33:47,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:33:47,502 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:33:47,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:33:47 BoogieIcfgContainer [2020-08-21 23:33:47,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:33:47,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:33:47,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:33:47,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:33:47,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:33:45" (1/3) ... [2020-08-21 23:33:47,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6b238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:33:47, skipping insertion in model container [2020-08-21 23:33:47,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:33:46" (2/3) ... [2020-08-21 23:33:47,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6b238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:33:47, skipping insertion in model container [2020-08-21 23:33:47,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:33:47" (3/3) ... [2020-08-21 23:33:47,524 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product45.cil.c [2020-08-21 23:33:47,536 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:33:47,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:33:47,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:33:47,583 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:33:47,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:33:47,583 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:33:47,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:33:47,583 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:33:47,584 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:33:47,584 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:33:47,584 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:33:47,608 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-21 23:33:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 23:33:47,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:33:47,620 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] [2020-08-21 23:33:47,620 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:33:47,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:33:47,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1763081390, now seen corresponding path program 1 times [2020-08-21 23:33:47,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:33:47,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490504528] [2020-08-21 23:33:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:33:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:48,354 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:33:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:33:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:48,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:33:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:33:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:48,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:33:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:48,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:33:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:33:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:48,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:33:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:33:48,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490504528] [2020-08-21 23:33:48,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:33:48,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:33:48,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137199636] [2020-08-21 23:33:48,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:33:48,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:33:48,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:33:48,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:33:48,472 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-21 23:33:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:33:49,728 INFO L93 Difference]: Finished difference Result 303 states and 398 transitions. [2020-08-21 23:33:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:33:49,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 23:33:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:33:49,746 INFO L225 Difference]: With dead ends: 303 [2020-08-21 23:33:49,746 INFO L226 Difference]: Without dead ends: 164 [2020-08-21 23:33:49,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:33:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-21 23:33:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-21 23:33:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 23:33:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2020-08-21 23:33:49,843 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 46 [2020-08-21 23:33:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:33:49,844 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2020-08-21 23:33:49,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:33:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2020-08-21 23:33:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 23:33:49,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:33:49,848 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] [2020-08-21 23:33:49,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:33:49,849 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:33:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:33:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1948835968, now seen corresponding path program 1 times [2020-08-21 23:33:49,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:33:49,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341444984] [2020-08-21 23:33:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:33:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:50,194 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:33:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:33:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:33:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:50,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:33:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:33:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:50,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:33:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:50,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:33:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:33:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:33:50,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341444984] [2020-08-21 23:33:50,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:33:50,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:33:50,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739245419] [2020-08-21 23:33:50,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:33:50,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:33:50,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:33:50,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:33:50,238 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand 4 states. [2020-08-21 23:33:50,633 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:33:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:33:51,512 INFO L93 Difference]: Finished difference Result 236 states and 289 transitions. [2020-08-21 23:33:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:33:51,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 23:33:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:33:51,517 INFO L225 Difference]: With dead ends: 236 [2020-08-21 23:33:51,517 INFO L226 Difference]: Without dead ends: 148 [2020-08-21 23:33:51,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:33:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-21 23:33:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-08-21 23:33:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 23:33:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2020-08-21 23:33:51,554 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 47 [2020-08-21 23:33:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:33:51,555 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2020-08-21 23:33:51,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:33:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2020-08-21 23:33:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 23:33:51,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:33:51,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:33:51,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:33:51,558 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:33:51,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:33:51,559 INFO L82 PathProgramCache]: Analyzing trace with hash -970175768, now seen corresponding path program 1 times [2020-08-21 23:33:51,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:33:51,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512459092] [2020-08-21 23:33:51,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:33:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:51,916 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:33:51,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:33:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:33:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:52,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:33:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:52,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:33:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:33:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:52,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:33:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:52,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:33:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:33:52,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512459092] [2020-08-21 23:33:52,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:33:52,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:33:52,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549709112] [2020-08-21 23:33:52,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:33:52,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:33:52,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:33:52,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:33:52,050 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand 8 states. [2020-08-21 23:33:52,442 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:33:52,761 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:33:53,059 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:33:53,283 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:33:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:33:54,455 INFO L93 Difference]: Finished difference Result 245 states and 303 transitions. [2020-08-21 23:33:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:33:54,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 23:33:54,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:33:54,460 INFO L225 Difference]: With dead ends: 245 [2020-08-21 23:33:54,460 INFO L226 Difference]: Without dead ends: 148 [2020-08-21 23:33:54,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:33:54,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-21 23:33:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-08-21 23:33:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 23:33:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2020-08-21 23:33:54,495 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 51 [2020-08-21 23:33:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:33:54,496 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2020-08-21 23:33:54,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:33:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2020-08-21 23:33:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 23:33:54,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:33:54,499 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] [2020-08-21 23:33:54,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:33:54,499 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:33:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:33:54,499 INFO L82 PathProgramCache]: Analyzing trace with hash 137025886, now seen corresponding path program 1 times [2020-08-21 23:33:54,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:33:54,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26313866] [2020-08-21 23:33:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:33:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,784 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:33:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:33:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:33:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:33:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:33:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:33:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 23:33:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:33:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:33:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:33:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:33:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:33:54,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26313866] [2020-08-21 23:33:54,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:33:54,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:33:54,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487372020] [2020-08-21 23:33:54,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:33:54,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:33:54,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:33:54,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:33:54,906 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 6 states. [2020-08-21 23:33:55,243 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:33:56,386 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:33:57,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:33:57,122 INFO L93 Difference]: Finished difference Result 342 states and 424 transitions. [2020-08-21 23:33:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:33:57,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 23:33:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:33:57,127 INFO L225 Difference]: With dead ends: 342 [2020-08-21 23:33:57,127 INFO L226 Difference]: Without dead ends: 245 [2020-08-21 23:33:57,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:33:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-08-21 23:33:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 204. [2020-08-21 23:33:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-21 23:33:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2020-08-21 23:33:57,175 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 64 [2020-08-21 23:33:57,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:33:57,175 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2020-08-21 23:33:57,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:33:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2020-08-21 23:33:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 23:33:57,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:33:57,178 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] [2020-08-21 23:33:57,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:33:57,178 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:33:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:33:57,179 INFO L82 PathProgramCache]: Analyzing trace with hash -274572639, now seen corresponding path program 1 times [2020-08-21 23:33:57,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:33:57,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636427611] [2020-08-21 23:33:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:33:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,456 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:33:57,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:33:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:33:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:33:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:33:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:33:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 23:33:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:33:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:33:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:33:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:33:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 23:33:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 23:33:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:33:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:33:57,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636427611] [2020-08-21 23:33:57,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:33:57,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:33:57,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265184162] [2020-08-21 23:33:57,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:33:57,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:33:57,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:33:57,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:33:57,573 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand 8 states. [2020-08-21 23:33:57,959 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:33:58,958 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:33:59,281 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:33:59,831 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:00,059 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:00,309 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:34:01,213 INFO L93 Difference]: Finished difference Result 607 states and 749 transitions. [2020-08-21 23:34:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:34:01,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-21 23:34:01,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:34:01,218 INFO L225 Difference]: With dead ends: 607 [2020-08-21 23:34:01,218 INFO L226 Difference]: Without dead ends: 427 [2020-08-21 23:34:01,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 23:34:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-08-21 23:34:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 363. [2020-08-21 23:34:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-21 23:34:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 416 transitions. [2020-08-21 23:34:01,313 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 416 transitions. Word has length 78 [2020-08-21 23:34:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:34:01,314 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 416 transitions. [2020-08-21 23:34:01,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:34:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 416 transitions. [2020-08-21 23:34:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 23:34:01,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:34:01,316 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] [2020-08-21 23:34:01,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:34:01,317 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:34:01,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:34:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1223934493, now seen corresponding path program 1 times [2020-08-21 23:34:01,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:34:01,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028180044] [2020-08-21 23:34:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:34:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,577 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:34:01,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:34:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:34:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:34:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:34:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 23:34:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:34:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:34:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 23:34:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 23:34:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:34:01,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028180044] [2020-08-21 23:34:01,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:34:01,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:34:01,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102923049] [2020-08-21 23:34:01,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:34:01,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:34:01,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:34:01,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:34:01,742 INFO L87 Difference]: Start difference. First operand 363 states and 416 transitions. Second operand 9 states. [2020-08-21 23:34:02,125 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:34:03,224 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:34:03,515 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:04,407 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:04,696 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:04,932 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:34:05,228 INFO L93 Difference]: Finished difference Result 466 states and 584 transitions. [2020-08-21 23:34:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 23:34:05,229 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-21 23:34:05,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:34:05,235 INFO L225 Difference]: With dead ends: 466 [2020-08-21 23:34:05,236 INFO L226 Difference]: Without dead ends: 463 [2020-08-21 23:34:05,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 23:34:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-08-21 23:34:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-08-21 23:34:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-21 23:34:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 415 transitions. [2020-08-21 23:34:05,314 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 415 transitions. Word has length 82 [2020-08-21 23:34:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:34:05,314 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 415 transitions. [2020-08-21 23:34:05,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:34:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 415 transitions. [2020-08-21 23:34:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 23:34:05,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:34:05,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:34:05,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:34:05,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:34:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:34:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1913348729, now seen corresponding path program 1 times [2020-08-21 23:34:05,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:34:05,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265399416] [2020-08-21 23:34:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:34:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,616 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:34:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:34:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:34:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:34:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:34:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 23:34:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:34:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:34:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 23:34:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 23:34:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:34:05,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265399416] [2020-08-21 23:34:05,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:34:05,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:34:05,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71191588] [2020-08-21 23:34:05,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:34:05,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:34:05,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:34:05,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:34:05,769 INFO L87 Difference]: Start difference. First operand 363 states and 415 transitions. Second operand 9 states. [2020-08-21 23:34:06,543 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:06,782 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:34:07,012 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:07,240 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:08,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:34:08,265 INFO L93 Difference]: Finished difference Result 810 states and 1008 transitions. [2020-08-21 23:34:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:34:08,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-21 23:34:08,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:34:08,271 INFO L225 Difference]: With dead ends: 810 [2020-08-21 23:34:08,271 INFO L226 Difference]: Without dead ends: 471 [2020-08-21 23:34:08,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:34:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-21 23:34:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 373. [2020-08-21 23:34:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-21 23:34:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2020-08-21 23:34:08,388 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 98 [2020-08-21 23:34:08,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:34:08,389 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2020-08-21 23:34:08,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:34:08,389 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2020-08-21 23:34:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 23:34:08,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:34:08,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:34:08,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:34:08,393 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:34:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:34:08,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1019862391, now seen corresponding path program 1 times [2020-08-21 23:34:08,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:34:08,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943774101] [2020-08-21 23:34:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:34:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,696 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:34:08,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:34:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:34:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:34:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:34:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 23:34:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:34:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:34:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 23:34:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 23:34:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:34:08,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943774101] [2020-08-21 23:34:08,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:34:08,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 23:34:08,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328606016] [2020-08-21 23:34:08,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 23:34:08,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:34:08,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 23:34:08,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:34:08,855 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 11 states. [2020-08-21 23:34:09,294 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:09,521 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:09,742 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:10,291 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:10,539 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:10,766 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:34:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:34:11,856 INFO L93 Difference]: Finished difference Result 830 states and 1030 transitions. [2020-08-21 23:34:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:34:11,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-21 23:34:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:34:11,861 INFO L225 Difference]: With dead ends: 830 [2020-08-21 23:34:11,861 INFO L226 Difference]: Without dead ends: 481 [2020-08-21 23:34:11,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:34:11,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-08-21 23:34:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 381. [2020-08-21 23:34:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-08-21 23:34:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 433 transitions. [2020-08-21 23:34:11,956 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 433 transitions. Word has length 98 [2020-08-21 23:34:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:34:11,956 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 433 transitions. [2020-08-21 23:34:11,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 23:34:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 433 transitions. [2020-08-21 23:34:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 23:34:11,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:34:11,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:34:11,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:34:11,959 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:34:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:34:11,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1027621750, now seen corresponding path program 1 times [2020-08-21 23:34:11,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:34:11,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572358811] [2020-08-21 23:34:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:34:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,342 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:34:12,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:34:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:34:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:34:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:34:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 23:34:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:34:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:34:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 23:34:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 23:34:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:34:12,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572358811] [2020-08-21 23:34:12,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:34:12,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:34:12,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082699576] [2020-08-21 23:34:12,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:34:12,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:34:12,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:34:12,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:34:12,591 INFO L87 Difference]: Start difference. First operand 381 states and 433 transitions. Second operand 7 states. [2020-08-21 23:34:12,947 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:34:13,435 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:34:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:34:15,348 INFO L93 Difference]: Finished difference Result 1133 states and 1452 transitions. [2020-08-21 23:34:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 23:34:15,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-21 23:34:15,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:34:15,354 INFO L225 Difference]: With dead ends: 1133 [2020-08-21 23:34:15,354 INFO L226 Difference]: Without dead ends: 776 [2020-08-21 23:34:15,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:34:15,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-21 23:34:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 677. [2020-08-21 23:34:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-08-21 23:34:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 803 transitions. [2020-08-21 23:34:15,470 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 803 transitions. Word has length 98 [2020-08-21 23:34:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:34:15,471 INFO L479 AbstractCegarLoop]: Abstraction has 677 states and 803 transitions. [2020-08-21 23:34:15,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:34:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 803 transitions. [2020-08-21 23:34:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 23:34:15,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:34:15,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:34:15,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:34:15,474 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:34:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:34:15,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1865521988, now seen corresponding path program 1 times [2020-08-21 23:34:15,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:34:15,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034253041] [2020-08-21 23:34:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:34:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,800 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:34:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:34:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:34:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:34:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:34:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:34:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:34:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:34:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:34:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:16,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:16,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 23:34:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 23:34:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 23:34:16,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034253041] [2020-08-21 23:34:16,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:34:16,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 23:34:16,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709612698] [2020-08-21 23:34:16,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 23:34:16,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:34:16,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 23:34:16,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 23:34:16,084 INFO L87 Difference]: Start difference. First operand 677 states and 803 transitions. Second operand 17 states. [2020-08-21 23:34:16,792 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:34:17,099 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:34:17,387 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:34:17,617 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:34:18,145 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:34:19,065 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:19,379 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:19,635 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:19,927 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:20,229 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:20,476 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:21,025 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 23:34:21,574 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 23:34:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:34:23,381 INFO L93 Difference]: Finished difference Result 1398 states and 1726 transitions. [2020-08-21 23:34:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 23:34:23,382 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-21 23:34:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:34:23,387 INFO L225 Difference]: With dead ends: 1398 [2020-08-21 23:34:23,387 INFO L226 Difference]: Without dead ends: 745 [2020-08-21 23:34:23,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 23:34:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-08-21 23:34:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 649. [2020-08-21 23:34:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 23:34:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 757 transitions. [2020-08-21 23:34:23,494 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 757 transitions. Word has length 102 [2020-08-21 23:34:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:34:23,494 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 757 transitions. [2020-08-21 23:34:23,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 23:34:23,495 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 757 transitions. [2020-08-21 23:34:23,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-21 23:34:23,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:34:23,498 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-08-21 23:34:23,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:34:23,498 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:34:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:34:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1153565628, now seen corresponding path program 1 times [2020-08-21 23:34:23,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:34:23,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255605243] [2020-08-21 23:34:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:34:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:23,856 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:34:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:34:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:34:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:23,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:34:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:34:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:23,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:34:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:23,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:34:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:23,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:23,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:34:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:34:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:34:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 23:34:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 23:34:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 23:34:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:34:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:34:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:34:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 23:34:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 23:34:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:34:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-21 23:34:24,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255605243] [2020-08-21 23:34:24,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:34:24,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 23:34:24,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843007766] [2020-08-21 23:34:24,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 23:34:24,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:34:24,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 23:34:24,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:34:24,308 INFO L87 Difference]: Start difference. First operand 649 states and 757 transitions. Second operand 18 states. [2020-08-21 23:34:25,200 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:34:25,592 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:34:25,855 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:34:26,109 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:34:26,708 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:34:27,673 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:28,003 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:28,295 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:28,571 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:28,893 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:29,163 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:30,370 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:30,633 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:30,928 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:31,181 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:34:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:34:32,040 INFO L93 Difference]: Finished difference Result 1181 states and 1457 transitions. [2020-08-21 23:34:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 23:34:32,041 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 153 [2020-08-21 23:34:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:34:32,042 INFO L225 Difference]: With dead ends: 1181 [2020-08-21 23:34:32,042 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 23:34:32,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=338, Invalid=1554, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 23:34:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 23:34:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 23:34:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 23:34:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 23:34:32,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2020-08-21 23:34:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:34:32,048 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 23:34:32,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 23:34:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 23:34:32,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 23:34:32,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:34:32,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 23:34:34,542 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 242 [2020-08-21 23:34:36,208 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 242 [2020-08-21 23:34:36,928 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 244 [2020-08-21 23:34:37,540 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 242 [2020-08-21 23:34:38,398 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 18 [2020-08-21 23:34:39,068 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-21 23:34:39,230 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-21 23:34:39,406 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-21 23:34:39,613 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 22 [2020-08-21 23:34:39,793 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-21 23:34:39,974 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-21 23:34:40,145 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 24 [2020-08-21 23:34:40,317 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 24 [2020-08-21 23:34:40,512 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:34:40,673 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 1 [2020-08-21 23:34:41,169 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 20 [2020-08-21 23:34:41,345 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 1 [2020-08-21 23:34:41,840 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 19 [2020-08-21 23:34:42,007 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1 [2020-08-21 23:34:42,511 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 20 [2020-08-21 23:34:42,988 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 22 [2020-08-21 23:34:43,479 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 25 [2020-08-21 23:34:44,006 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 19 [2020-08-21 23:34:44,245 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 9