/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=1.0 --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_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:00:35,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:00:35,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:00:35,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:00:35,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:00:35,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:00:35,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:00:35,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:00:35,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:00:35,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:00:35,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:00:35,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:00:35,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:00:35,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:00:35,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:00:35,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:00:35,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:00:35,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:00:35,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:00:35,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:00:35,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:00:35,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:00:35,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:00:35,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:00:35,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:00:35,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:00:35,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:00:35,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:00:35,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:00:35,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:00:35,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:00:35,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:00:35,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:00:35,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:00:35,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:00:35,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:00:35,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:00:35,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:00:35,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:00:35,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:00:35,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:00:35,209 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 [2020-08-22 02:00:35,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:00:35,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:00:35,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:00:35,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:00:35,250 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:00:35,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:00:35,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:00:35,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:00:35,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:00:35,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:00:35,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:00:35,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:00:35,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:00:35,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:00:35,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:00:35,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:00:35,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:00:35,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:00:35,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:00:35,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:00:35,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:00:35,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:00:35,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:00:35,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:00:35,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:00:35,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:00:35,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:00:35,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:00:35,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:00:35,257 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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-08-22 02:00:35,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:00:35,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:00:35,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:00:35,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:00:35,562 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:00:35,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-22 02:00:35,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed5d35d85/7cdae637eb8b4bee87e2108df2c720ab/FLAG6fa3ac94e [2020-08-22 02:00:36,157 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:00:36,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-22 02:00:36,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed5d35d85/7cdae637eb8b4bee87e2108df2c720ab/FLAG6fa3ac94e [2020-08-22 02:00:36,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed5d35d85/7cdae637eb8b4bee87e2108df2c720ab [2020-08-22 02:00:36,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:00:36,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:00:36,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:00:36,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:00:36,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:00:36,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:00:36" (1/1) ... [2020-08-22 02:00:36,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a93dd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:36, skipping insertion in model container [2020-08-22 02:00:36,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:00:36" (1/1) ... [2020-08-22 02:00:36,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:00:36,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:00:37,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:00:37,127 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:00:37,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:00:37,276 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:00:37,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37 WrapperNode [2020-08-22 02:00:37,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:00:37,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:00:37,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:00:37,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:00:37,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37" (1/1) ... [2020-08-22 02:00:37,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37" (1/1) ... [2020-08-22 02:00:37,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37" (1/1) ... [2020-08-22 02:00:37,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37" (1/1) ... [2020-08-22 02:00:37,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37" (1/1) ... [2020-08-22 02:00:37,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37" (1/1) ... [2020-08-22 02:00:37,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37" (1/1) ... [2020-08-22 02:00:37,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:00:37,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:00:37,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:00:37,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:00:37,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37" (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 [2020-08-22 02:00:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:00:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:00:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:00:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:00:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:00:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:00:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:00:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:00:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:00:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:00:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:00:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:00:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:00:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:00:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:00:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:00:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:00:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:00:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:00:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:00:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:00:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:00:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:00:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:00:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:00:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:00:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:00:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:00:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:00:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:00:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:00:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:00:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:00:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:00:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:00:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:00:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:00:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:00:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:00:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:00:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:00:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:00:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:00:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:00:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:00:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:00:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:00:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:00:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:00:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:00:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:00:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:00:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:00:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:00:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:00:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:00:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:00:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 02:00:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:00:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:00:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:00:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:00:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 02:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:00:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:00:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:00:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:00:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:00:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:00:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:00:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:00:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:00:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:00:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:00:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:00:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:00:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:00:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:00:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:00:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:00:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:00:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:00:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:00:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:00:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:00:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:00:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:00:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:00:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:00:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:00:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:00:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:00:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:00:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:00:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:00:38,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:00:38,582 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:00:38,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:00:38 BoogieIcfgContainer [2020-08-22 02:00:38,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:00:38,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:00:38,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:00:38,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:00:38,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:00:36" (1/3) ... [2020-08-22 02:00:38,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f071e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:00:38, skipping insertion in model container [2020-08-22 02:00:38,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:00:37" (2/3) ... [2020-08-22 02:00:38,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f071e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:00:38, skipping insertion in model container [2020-08-22 02:00:38,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:00:38" (3/3) ... [2020-08-22 02:00:38,599 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2020-08-22 02:00:38,610 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:00:38,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:00:38,632 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:00:38,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:00:38,655 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:00:38,655 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:00:38,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:00:38,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:00:38,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:00:38,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:00:38,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:00:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-22 02:00:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:00:38,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:38,691 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] [2020-08-22 02:00:38,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:38,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:38,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2020-08-22 02:00:38,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:38,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919851604] [2020-08-22 02:00:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:39,462 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:39,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:39,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:39,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:39,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:39,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:39,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:00:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:00:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:00:39,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919851604] [2020-08-22 02:00:39,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:39,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:00:39,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413116605] [2020-08-22 02:00:39,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:00:39,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:39,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:00:39,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:00:39,621 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-08-22 02:00:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:40,982 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2020-08-22 02:00:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:00:40,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:00:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:41,001 INFO L225 Difference]: With dead ends: 354 [2020-08-22 02:00:41,001 INFO L226 Difference]: Without dead ends: 191 [2020-08-22 02:00:41,007 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 [2020-08-22 02:00:41,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-22 02:00:41,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2020-08-22 02:00:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-22 02:00:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-08-22 02:00:41,148 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2020-08-22 02:00:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:41,148 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-08-22 02:00:41,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:00:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-08-22 02:00:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:00:41,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:41,152 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] [2020-08-22 02:00:41,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:00:41,153 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:41,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2020-08-22 02:00:41,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:41,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677746113] [2020-08-22 02:00:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:41,505 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:41,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:41,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:00:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:41,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:00:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:00:41,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677746113] [2020-08-22 02:00:41,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:41,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:00:41,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990280331] [2020-08-22 02:00:41,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:00:41,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:41,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:00:41,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:00:41,552 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2020-08-22 02:00:41,989 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:43,056 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2020-08-22 02:00:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:00:43,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:00:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:43,061 INFO L225 Difference]: With dead ends: 283 [2020-08-22 02:00:43,061 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 02:00:43,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:00:43,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 02:00:43,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-22 02:00:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-22 02:00:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2020-08-22 02:00:43,107 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2020-08-22 02:00:43,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:43,107 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2020-08-22 02:00:43,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:00:43,108 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2020-08-22 02:00:43,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:00:43,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:43,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:00:43,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:00:43,111 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:43,111 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2020-08-22 02:00:43,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:43,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407221467] [2020-08-22 02:00:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:43,419 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:43,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:43,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:43,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:00:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:43,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:00:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:00:43,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407221467] [2020-08-22 02:00:43,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:43,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:00:43,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149306109] [2020-08-22 02:00:43,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:00:43,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:43,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:00:43,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:00:43,527 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2020-08-22 02:00:43,893 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:00:44,223 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:44,469 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:44,688 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:46,126 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2020-08-22 02:00:46,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 02:00:46,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 02:00:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:46,130 INFO L225 Difference]: With dead ends: 296 [2020-08-22 02:00:46,130 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 02:00:46,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:00:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 02:00:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-22 02:00:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-22 02:00:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2020-08-22 02:00:46,183 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2020-08-22 02:00:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:46,183 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2020-08-22 02:00:46,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:00:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2020-08-22 02:00:46,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:00:46,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:46,187 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] [2020-08-22 02:00:46,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:00:46,187 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:46,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:46,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2020-08-22 02:00:46,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:46,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296764794] [2020-08-22 02:00:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,512 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:00:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 02:00:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 02:00:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:00:46,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296764794] [2020-08-22 02:00:46,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:46,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:00:46,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649290143] [2020-08-22 02:00:46,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:00:46,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:46,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:00:46,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:00:46,614 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2020-08-22 02:00:46,907 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:00:48,061 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:48,951 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2020-08-22 02:00:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:00:48,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-22 02:00:48,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:48,958 INFO L225 Difference]: With dead ends: 404 [2020-08-22 02:00:48,958 INFO L226 Difference]: Without dead ends: 283 [2020-08-22 02:00:48,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:00:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-22 02:00:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2020-08-22 02:00:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-22 02:00:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2020-08-22 02:00:49,007 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2020-08-22 02:00:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:49,008 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2020-08-22 02:00:49,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:00:49,008 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2020-08-22 02:00:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 02:00:49,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:49,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:00:49,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:00:49,011 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:49,011 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2020-08-22 02:00:49,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:49,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348332265] [2020-08-22 02:00:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,301 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:49,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:00:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:00:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:00:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 02:00:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 02:00:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:00:49,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348332265] [2020-08-22 02:00:49,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:49,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:00:49,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75464746] [2020-08-22 02:00:49,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:00:49,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:49,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:00:49,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:00:49,424 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2020-08-22 02:00:49,809 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:00:50,845 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:51,167 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:00:51,755 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:52,026 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:52,281 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:53,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:53,438 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2020-08-22 02:00:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:00:53,439 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-22 02:00:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:53,447 INFO L225 Difference]: With dead ends: 718 [2020-08-22 02:00:53,448 INFO L226 Difference]: Without dead ends: 502 [2020-08-22 02:00:53,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:00:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-22 02:00:53,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2020-08-22 02:00:53,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-22 02:00:53,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2020-08-22 02:00:53,572 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2020-08-22 02:00:53,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:53,573 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2020-08-22 02:00:53,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:00:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2020-08-22 02:00:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:00:53,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:53,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:00:53,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:00:53,575 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:53,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:53,576 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2020-08-22 02:00:53,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:53,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744017224] [2020-08-22 02:00:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,865 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:53,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:00:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:00:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:00:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:00:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:00:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:00:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:00:53,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744017224] [2020-08-22 02:00:53,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:53,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:00:53,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509259559] [2020-08-22 02:00:53,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:00:53,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:53,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:00:53,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:00:53,962 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2020-08-22 02:00:54,306 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:00:55,535 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:00:55,804 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:56,820 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:57,067 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:57,309 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:57,643 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2020-08-22 02:00:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:00:57,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-22 02:00:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:57,648 INFO L225 Difference]: With dead ends: 544 [2020-08-22 02:00:57,648 INFO L226 Difference]: Without dead ends: 541 [2020-08-22 02:00:57,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:00:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-22 02:00:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2020-08-22 02:00:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-22 02:00:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2020-08-22 02:00:57,733 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2020-08-22 02:00:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:57,734 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2020-08-22 02:00:57,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:00:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2020-08-22 02:00:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-22 02:00:57,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:57,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:00:57,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:00:57,737 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2020-08-22 02:00:57,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:57,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791223642] [2020-08-22 02:00:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:57,992 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:00:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:00:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:00:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:00:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:00:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:00:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 02:00:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 02:00:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:00:58,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791223642] [2020-08-22 02:00:58,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:58,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:00:58,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895826352] [2020-08-22 02:00:58,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:00:58,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:58,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:00:58,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:00:58,143 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2020-08-22 02:00:59,064 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:00:59,309 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:00:59,554 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:59,778 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:01:01,036 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2020-08-22 02:01:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:01:01,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-08-22 02:01:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:01:01,042 INFO L225 Difference]: With dead ends: 960 [2020-08-22 02:01:01,042 INFO L226 Difference]: Without dead ends: 549 [2020-08-22 02:01:01,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:01:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-08-22 02:01:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2020-08-22 02:01:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-22 02:01:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2020-08-22 02:01:01,152 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2020-08-22 02:01:01,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:01:01,153 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2020-08-22 02:01:01,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:01:01,153 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2020-08-22 02:01:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-22 02:01:01,155 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:01:01,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:01:01,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:01:01,155 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:01:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:01:01,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2020-08-22 02:01:01,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:01:01,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274402366] [2020-08-22 02:01:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:01:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,428 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:01:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:01:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:01:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:01:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:01:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:01:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:01:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:01:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 02:01:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 02:01:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:01:01,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274402366] [2020-08-22 02:01:01,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:01:01,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:01:01,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274997852] [2020-08-22 02:01:01,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:01:01,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:01:01,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:01:01,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:01:01,671 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2020-08-22 02:01:02,173 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:02,395 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:02,608 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:03,232 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:03,489 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:03,713 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:01:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:01:05,057 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2020-08-22 02:01:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:01:05,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-08-22 02:01:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:01:05,065 INFO L225 Difference]: With dead ends: 980 [2020-08-22 02:01:05,065 INFO L226 Difference]: Without dead ends: 559 [2020-08-22 02:01:05,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:01:05,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-08-22 02:01:05,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2020-08-22 02:01:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-22 02:01:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2020-08-22 02:01:05,168 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2020-08-22 02:01:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:01:05,168 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2020-08-22 02:01:05,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:01:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2020-08-22 02:01:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-22 02:01:05,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:01:05,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:01:05,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:01:05,172 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:01:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:01:05,172 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2020-08-22 02:01:05,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:01:05,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274923411] [2020-08-22 02:01:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:01:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,495 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:01:05,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:01:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:01:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:01:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:01:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:01:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:01:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:01:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 02:01:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 02:01:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:01:05,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274923411] [2020-08-22 02:01:05,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:01:05,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:01:05,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265225365] [2020-08-22 02:01:05,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:01:05,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:01:05,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:01:05,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:01:05,677 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2020-08-22 02:01:06,092 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:01:06,574 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:01:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:01:09,197 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2020-08-22 02:01:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:01:09,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-08-22 02:01:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:01:09,204 INFO L225 Difference]: With dead ends: 1342 [2020-08-22 02:01:09,205 INFO L226 Difference]: Without dead ends: 913 [2020-08-22 02:01:09,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:01:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-22 02:01:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2020-08-22 02:01:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-22 02:01:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2020-08-22 02:01:09,341 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2020-08-22 02:01:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:01:09,342 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2020-08-22 02:01:09,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:01:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2020-08-22 02:01:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 02:01:09,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:01:09,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:01:09,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:01:09,345 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:01:09,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:01:09,345 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2020-08-22 02:01:09,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:01:09,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221259717] [2020-08-22 02:01:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:01:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,621 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:01:09,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:01:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:01:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:01:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:01:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:01:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:01:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:01:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:01:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 02:01:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 02:01:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 02:01:09,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221259717] [2020-08-22 02:01:09,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:01:09,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 02:01:09,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102905631] [2020-08-22 02:01:09,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 02:01:09,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:01:09,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 02:01:10,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 02:01:10,000 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 17 states. [2020-08-22 02:01:10,937 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:01:11,241 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:11,477 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:11,704 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:12,335 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:01:13,483 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:13,835 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:14,130 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:14,401 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:14,741 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:15,034 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:15,580 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 02:01:16,132 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 02:01:18,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:01:18,669 INFO L93 Difference]: Finished difference Result 1649 states and 2014 transitions. [2020-08-22 02:01:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 02:01:18,670 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-08-22 02:01:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:01:18,677 INFO L225 Difference]: With dead ends: 1649 [2020-08-22 02:01:18,677 INFO L226 Difference]: Without dead ends: 880 [2020-08-22 02:01:18,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 02:01:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-22 02:01:18,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 763. [2020-08-22 02:01:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-22 02:01:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 880 transitions. [2020-08-22 02:01:18,847 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 880 transitions. Word has length 108 [2020-08-22 02:01:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:01:18,847 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 880 transitions. [2020-08-22 02:01:18,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 02:01:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 880 transitions. [2020-08-22 02:01:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-22 02:01:18,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:01:18,851 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:01:18,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:01:18,852 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:01:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:01:18,852 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2020-08-22 02:01:18,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:01:18,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300057083] [2020-08-22 02:01:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:01:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,185 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:01:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:01:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:01:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:01:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:01:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:01:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:01:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:01:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:01:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:01:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 02:01:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 02:01:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 02:01:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:01:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:01:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:01:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:01:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 02:01:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-22 02:01:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:01:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-22 02:01:19,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300057083] [2020-08-22 02:01:19,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:01:19,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 02:01:19,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060487686] [2020-08-22 02:01:19,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 02:01:19,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:01:19,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 02:01:19,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:01:19,497 INFO L87 Difference]: Start difference. First operand 763 states and 880 transitions. Second operand 18 states. [2020-08-22 02:01:20,181 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:01:20,508 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:20,763 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:21,013 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:01:21,687 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:01:22,749 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:23,051 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:23,308 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:23,562 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:23,882 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:24,139 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:25,374 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:25,611 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:25,870 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:26,101 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:01:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:01:27,530 INFO L93 Difference]: Finished difference Result 1402 states and 1720 transitions. [2020-08-22 02:01:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 02:01:27,535 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-08-22 02:01:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:01:27,536 INFO L225 Difference]: With dead ends: 1402 [2020-08-22 02:01:27,537 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 02:01:27,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 02:01:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 02:01:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 02:01:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 02:01:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 02:01:27,543 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-08-22 02:01:27,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:01:27,543 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 02:01:27,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 02:01:27,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 02:01:27,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 02:01:27,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:01:27,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 02:01:28,282 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-22 02:01:28,390 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-22 02:01:28,515 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-22 02:01:28,735 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-22 02:01:30,100 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-22 02:01:30,794 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-22 02:01:31,302 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259 [2020-08-22 02:01:33,494 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-22 02:01:34,301 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259 [2020-08-22 02:01:34,832 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-22 02:01:35,002 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1