/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:17:44,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:17:44,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:17:44,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:17:44,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:17:44,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:17:44,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:17:44,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:17:44,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:17:44,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:17:44,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:17:44,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:17:44,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:17:44,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:17:44,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:17:44,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:17:44,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:17:44,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:17:44,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:17:44,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:17:44,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:17:44,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:17:44,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:17:44,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:17:44,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:17:44,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:17:44,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:17:44,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:17:44,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:17:44,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:17:44,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:17:44,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:17:44,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:17:44,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:17:44,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:17:44,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:17:44,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:17:44,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:17:44,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:17:44,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:17:44,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:17:44,185 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 01:17:44,225 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:17:44,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:17:44,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:17:44,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:17:44,228 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:17:44,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:17:44,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:17:44,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:17:44,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:17:44,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:17:44,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:17:44,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:17:44,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:17:44,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:17:44,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:17:44,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:17:44,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:17:44,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:17:44,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:17:44,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:17:44,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:17:44,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:17:44,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:17:44,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:17:44,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:17:44,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:17:44,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:17:44,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:17:44,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:17:44,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:17:44,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:17:44,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:17:44,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:17:44,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:17:44,537 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:17:44,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-22 01:17:44,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9844cc46/2803699e5d214b2498a51c9b6e246ef3/FLAGab3f42043 [2020-08-22 01:17:45,101 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:17:45,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-22 01:17:45,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9844cc46/2803699e5d214b2498a51c9b6e246ef3/FLAGab3f42043 [2020-08-22 01:17:45,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9844cc46/2803699e5d214b2498a51c9b6e246ef3 [2020-08-22 01:17:45,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:17:45,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:17:45,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:17:45,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:17:45,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:17:45,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:17:45" (1/1) ... [2020-08-22 01:17:45,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b376011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:45, skipping insertion in model container [2020-08-22 01:17:45,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:17:45" (1/1) ... [2020-08-22 01:17:45,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:17:45,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:17:46,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:17:46,031 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:17:46,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:17:46,154 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:17:46,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46 WrapperNode [2020-08-22 01:17:46,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:17:46,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:17:46,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:17:46,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:17:46,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46" (1/1) ... [2020-08-22 01:17:46,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46" (1/1) ... [2020-08-22 01:17:46,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46" (1/1) ... [2020-08-22 01:17:46,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46" (1/1) ... [2020-08-22 01:17:46,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46" (1/1) ... [2020-08-22 01:17:46,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46" (1/1) ... [2020-08-22 01:17:46,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46" (1/1) ... [2020-08-22 01:17:46,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:17:46,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:17:46,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:17:46,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:17:46,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:17:46,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:17:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:17:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:17:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:17:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:17:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:17:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:17:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:17:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 01:17:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:17:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:17:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:17:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:17:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:17:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:17:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:17:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 01:17:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:17:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:17:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:17:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:17:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:17:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:17:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:17:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:17:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:17:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:17:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:17:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:17:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:17:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:17:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 01:17:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:17:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:17:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:17:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:17:46,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:17:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:17:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:17:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:17:46,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:17:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:17:46,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:17:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:17:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:17:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:17:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:17:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:17:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:17:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:17:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:17:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:17:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:17:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:17:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:17:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:17:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:17:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:17:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:17:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:17:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 01:17:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:17:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:17:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:17:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:17:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 01:17:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:17:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:17:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:17:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:17:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:17:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:17:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:17:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:17:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:17:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 01:17:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:17:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:17:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:17:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:17:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:17:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:17:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:17:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:17:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:17:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:17:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:17:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:17:46,329 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:17:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:17:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:17:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:17:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:17:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:17:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:17:46,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:17:47,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:17:47,331 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:17:47,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:17:47 BoogieIcfgContainer [2020-08-22 01:17:47,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:17:47,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:17:47,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:17:47,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:17:47,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:17:45" (1/3) ... [2020-08-22 01:17:47,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7f0ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:17:47, skipping insertion in model container [2020-08-22 01:17:47,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:17:46" (2/3) ... [2020-08-22 01:17:47,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7f0ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:17:47, skipping insertion in model container [2020-08-22 01:17:47,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:17:47" (3/3) ... [2020-08-22 01:17:47,344 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2020-08-22 01:17:47,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:17:47,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:17:47,375 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:17:47,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:17:47,400 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:17:47,400 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:17:47,400 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:17:47,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:17:47,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:17:47,401 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:17:47,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:17:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-22 01:17:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 01:17:47,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:17:47,434 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 01:17:47,435 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:17:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:17:47,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1091923628, now seen corresponding path program 1 times [2020-08-22 01:17:47,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:17:47,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115570256] [2020-08-22 01:17:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:17:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:48,085 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:17:48,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:17:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:48,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:17:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:17:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:48,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:17:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:48,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:17:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:17:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:48,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:17:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:48,165 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 01:17:48,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115570256] [2020-08-22 01:17:48,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:17:48,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:17:48,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468688133] [2020-08-22 01:17:48,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:17:48,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:17:48,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:17:48,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:17:48,192 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-22 01:17:49,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:17:49,353 INFO L93 Difference]: Finished difference Result 311 states and 407 transitions. [2020-08-22 01:17:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:17:49,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 01:17:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:17:49,370 INFO L225 Difference]: With dead ends: 311 [2020-08-22 01:17:49,370 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 01:17:49,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:17:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 01:17:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-22 01:17:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-22 01:17:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-22 01:17:49,463 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-22 01:17:49,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:17:49,463 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-22 01:17:49,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:17:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-22 01:17:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 01:17:49,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:17:49,468 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 01:17:49,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:17:49,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:17:49,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:17:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash 644500822, now seen corresponding path program 1 times [2020-08-22 01:17:49,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:17:49,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906571636] [2020-08-22 01:17:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:17:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:49,796 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:17:49,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:17:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:49,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:17:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:49,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:17:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:49,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:17:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:17:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:49,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:17:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:17:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:49,853 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 01:17:49,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906571636] [2020-08-22 01:17:49,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:17:49,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:17:49,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677804018] [2020-08-22 01:17:49,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:17:49,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:17:49,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:17:49,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:17:49,861 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-22 01:17:50,263 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:17:51,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:17:51,102 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-22 01:17:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:17:51,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 01:17:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:17:51,106 INFO L225 Difference]: With dead ends: 238 [2020-08-22 01:17:51,106 INFO L226 Difference]: Without dead ends: 152 [2020-08-22 01:17:51,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:17:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-22 01:17:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2020-08-22 01:17:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-22 01:17:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-22 01:17:51,171 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-22 01:17:51,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:17:51,171 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-22 01:17:51,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:17:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-22 01:17:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 01:17:51,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:17:51,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:17:51,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:17:51,174 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:17:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:17:51,175 INFO L82 PathProgramCache]: Analyzing trace with hash -350015351, now seen corresponding path program 1 times [2020-08-22 01:17:51,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:17:51,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493219747] [2020-08-22 01:17:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:17:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:51,484 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:17:51,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:17:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:51,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:17:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:51,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:17:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:51,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:17:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:51,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:17:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:51,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:17:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:51,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:17:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:51,603 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 01:17:51,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493219747] [2020-08-22 01:17:51,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:17:51,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:17:51,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044554927] [2020-08-22 01:17:51,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:17:51,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:17:51,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:17:51,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:17:51,615 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-22 01:17:51,961 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:17:52,271 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:17:52,503 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:17:52,759 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:17:53,520 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:17:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:17:55,215 INFO L93 Difference]: Finished difference Result 427 states and 530 transitions. [2020-08-22 01:17:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:17:55,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 01:17:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:17:55,221 INFO L225 Difference]: With dead ends: 427 [2020-08-22 01:17:55,222 INFO L226 Difference]: Without dead ends: 326 [2020-08-22 01:17:55,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:17:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-22 01:17:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-22 01:17:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 01:17:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2020-08-22 01:17:55,292 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2020-08-22 01:17:55,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:17:55,292 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2020-08-22 01:17:55,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:17:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2020-08-22 01:17:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 01:17:55,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:17:55,295 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] [2020-08-22 01:17:55,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:17:55,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:17:55,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:17:55,296 INFO L82 PathProgramCache]: Analyzing trace with hash -103520613, now seen corresponding path program 1 times [2020-08-22 01:17:55,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:17:55,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466667345] [2020-08-22 01:17:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:17:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:55,623 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:17:55,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:17:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:17:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:17:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:55,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:17:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:55,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:17:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:55,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:17:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:17:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:17:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:17:55,765 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 01:17:55,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466667345] [2020-08-22 01:17:55,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:17:55,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 01:17:55,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163402667] [2020-08-22 01:17:55,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:17:55,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:17:55,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:17:55,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:17:55,767 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand 12 states. [2020-08-22 01:17:56,214 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:17:56,549 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:17:56,819 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:17:57,090 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:17:57,626 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:17:58,545 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:17:58,895 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:17:59,249 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:17:59,484 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:17:59,773 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:00,166 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:00,494 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:00,847 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:02,516 INFO L93 Difference]: Finished difference Result 1081 states and 1492 transitions. [2020-08-22 01:18:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 01:18:02,517 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 01:18:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:02,534 INFO L225 Difference]: With dead ends: 1081 [2020-08-22 01:18:02,534 INFO L226 Difference]: Without dead ends: 837 [2020-08-22 01:18:02,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 01:18:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-08-22 01:18:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 744. [2020-08-22 01:18:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-08-22 01:18:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 950 transitions. [2020-08-22 01:18:02,722 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 950 transitions. Word has length 57 [2020-08-22 01:18:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:02,723 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 950 transitions. [2020-08-22 01:18:02,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:18:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 950 transitions. [2020-08-22 01:18:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 01:18:02,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:02,728 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] [2020-08-22 01:18:02,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:18:02,728 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:02,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:02,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1065334495, now seen corresponding path program 1 times [2020-08-22 01:18:02,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:02,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393251343] [2020-08-22 01:18:02,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,030 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:18:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:18:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:18:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:18:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,157 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 01:18:03,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393251343] [2020-08-22 01:18:03,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:18:03,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:18:03,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053061590] [2020-08-22 01:18:03,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:18:03,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:03,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:18:03,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:18:03,162 INFO L87 Difference]: Start difference. First operand 744 states and 950 transitions. Second operand 6 states. [2020-08-22 01:18:03,479 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:05,255 INFO L93 Difference]: Finished difference Result 1779 states and 2437 transitions. [2020-08-22 01:18:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 01:18:05,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 01:18:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:05,271 INFO L225 Difference]: With dead ends: 1779 [2020-08-22 01:18:05,272 INFO L226 Difference]: Without dead ends: 1059 [2020-08-22 01:18:05,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:18:05,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-08-22 01:18:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 972. [2020-08-22 01:18:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-08-22 01:18:05,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1232 transitions. [2020-08-22 01:18:05,493 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1232 transitions. Word has length 61 [2020-08-22 01:18:05,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:05,494 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 1232 transitions. [2020-08-22 01:18:05,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:18:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1232 transitions. [2020-08-22 01:18:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 01:18:05,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:05,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:05,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:18:05,498 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:05,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash 380759586, now seen corresponding path program 1 times [2020-08-22 01:18:05,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:05,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145908055] [2020-08-22 01:18:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,823 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:05,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:18:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 01:18:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:18:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 01:18:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 01:18:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 01:18:05,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145908055] [2020-08-22 01:18:05,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:05,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:18:05,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776777896] [2020-08-22 01:18:05,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:18:05,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:05,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:18:05,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:18:05,960 INFO L87 Difference]: Start difference. First operand 972 states and 1232 transitions. Second operand 10 states. [2020-08-22 01:18:06,604 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 01:18:07,121 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:08,923 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:10,686 INFO L93 Difference]: Finished difference Result 1881 states and 2481 transitions. [2020-08-22 01:18:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 01:18:10,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 01:18:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:10,694 INFO L225 Difference]: With dead ends: 1881 [2020-08-22 01:18:10,695 INFO L226 Difference]: Without dead ends: 1176 [2020-08-22 01:18:10,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 01:18:10,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-08-22 01:18:10,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1079. [2020-08-22 01:18:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-08-22 01:18:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1343 transitions. [2020-08-22 01:18:10,896 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1343 transitions. Word has length 88 [2020-08-22 01:18:10,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:10,899 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1343 transitions. [2020-08-22 01:18:10,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:18:10,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1343 transitions. [2020-08-22 01:18:10,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 01:18:10,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:10,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:10,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:18:10,906 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2024665879, now seen corresponding path program 1 times [2020-08-22 01:18:10,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:10,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840477224] [2020-08-22 01:18:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,162 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:11,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:18:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 01:18:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 01:18:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 01:18:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 01:18:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 01:18:11,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840477224] [2020-08-22 01:18:11,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:11,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 01:18:11,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309517391] [2020-08-22 01:18:11,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:18:11,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:11,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:18:11,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:18:11,371 INFO L87 Difference]: Start difference. First operand 1079 states and 1343 transitions. Second operand 9 states. [2020-08-22 01:18:12,357 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:12,575 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:12,832 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:13,954 INFO L93 Difference]: Finished difference Result 1991 states and 2604 transitions. [2020-08-22 01:18:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:18:13,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-22 01:18:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:13,966 INFO L225 Difference]: With dead ends: 1991 [2020-08-22 01:18:13,966 INFO L226 Difference]: Without dead ends: 1202 [2020-08-22 01:18:13,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:18:13,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-08-22 01:18:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1079. [2020-08-22 01:18:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-08-22 01:18:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1341 transitions. [2020-08-22 01:18:14,287 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1341 transitions. Word has length 132 [2020-08-22 01:18:14,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:14,287 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1341 transitions. [2020-08-22 01:18:14,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:18:14,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1341 transitions. [2020-08-22 01:18:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 01:18:14,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:14,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:14,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:18:14,294 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:14,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:14,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2030061671, now seen corresponding path program 1 times [2020-08-22 01:18:14,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:14,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850240557] [2020-08-22 01:18:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,598 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:14,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:18:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 01:18:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 01:18:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 01:18:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 01:18:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 01:18:14,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850240557] [2020-08-22 01:18:14,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:14,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:18:14,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580322904] [2020-08-22 01:18:14,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:18:14,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:14,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:18:14,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:18:14,793 INFO L87 Difference]: Start difference. First operand 1079 states and 1341 transitions. Second operand 10 states. [2020-08-22 01:18:16,269 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:16,490 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:18:16,717 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:16,949 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:17,311 INFO L93 Difference]: Finished difference Result 2009 states and 2576 transitions. [2020-08-22 01:18:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 01:18:17,318 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-22 01:18:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:17,325 INFO L225 Difference]: With dead ends: 2009 [2020-08-22 01:18:17,325 INFO L226 Difference]: Without dead ends: 1226 [2020-08-22 01:18:17,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:18:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-08-22 01:18:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1115. [2020-08-22 01:18:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-08-22 01:18:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1389 transitions. [2020-08-22 01:18:17,563 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1389 transitions. Word has length 132 [2020-08-22 01:18:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:17,564 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1389 transitions. [2020-08-22 01:18:17,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:18:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1389 transitions. [2020-08-22 01:18:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 01:18:17,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:17,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:17,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:18:17,570 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:17,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:17,571 INFO L82 PathProgramCache]: Analyzing trace with hash 95790874, now seen corresponding path program 1 times [2020-08-22 01:18:17,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:17,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355020759] [2020-08-22 01:18:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:17,841 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:17,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:17,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:17,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:18:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:17,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:17,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:17,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:18:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 01:18:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 01:18:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 01:18:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 01:18:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 01:18:18,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355020759] [2020-08-22 01:18:18,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:18,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:18:18,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564009745] [2020-08-22 01:18:18,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:18:18,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:18,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:18:18,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:18:18,106 INFO L87 Difference]: Start difference. First operand 1115 states and 1389 transitions. Second operand 10 states. [2020-08-22 01:18:19,029 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:19,271 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:18:19,520 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:19,758 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:20,638 INFO L93 Difference]: Finished difference Result 2337 states and 3010 transitions. [2020-08-22 01:18:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:18:20,639 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-22 01:18:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:20,646 INFO L225 Difference]: With dead ends: 2337 [2020-08-22 01:18:20,646 INFO L226 Difference]: Without dead ends: 1246 [2020-08-22 01:18:20,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 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 01:18:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2020-08-22 01:18:20,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1135. [2020-08-22 01:18:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-08-22 01:18:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1411 transitions. [2020-08-22 01:18:20,888 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1411 transitions. Word has length 128 [2020-08-22 01:18:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:20,892 INFO L479 AbstractCegarLoop]: Abstraction has 1135 states and 1411 transitions. [2020-08-22 01:18:20,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:18:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1411 transitions. [2020-08-22 01:18:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 01:18:20,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:20,896 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:20,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:18:20,896 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:20,897 INFO L82 PathProgramCache]: Analyzing trace with hash 336030620, now seen corresponding path program 1 times [2020-08-22 01:18:20,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:20,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820197068] [2020-08-22 01:18:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,207 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:21,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:18:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:18:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 01:18:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 01:18:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 01:18:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 01:18:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 01:18:21,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820197068] [2020-08-22 01:18:21,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:21,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 01:18:21,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821925436] [2020-08-22 01:18:21,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:18:21,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:21,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:18:21,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:18:21,442 INFO L87 Difference]: Start difference. First operand 1135 states and 1411 transitions. Second operand 12 states. [2020-08-22 01:18:22,022 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:22,246 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:22,463 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:23,112 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:23,361 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:23,585 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:24,599 INFO L93 Difference]: Finished difference Result 2133 states and 2729 transitions. [2020-08-22 01:18:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:18:24,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-22 01:18:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:24,606 INFO L225 Difference]: With dead ends: 2133 [2020-08-22 01:18:24,606 INFO L226 Difference]: Without dead ends: 1022 [2020-08-22 01:18:24,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:18:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-08-22 01:18:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 966. [2020-08-22 01:18:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-22 01:18:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1168 transitions. [2020-08-22 01:18:24,783 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1168 transitions. Word has length 128 [2020-08-22 01:18:24,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:24,783 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1168 transitions. [2020-08-22 01:18:24,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:18:24,784 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1168 transitions. [2020-08-22 01:18:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 01:18:24,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:24,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:24,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:18:24,787 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:24,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1755432535, now seen corresponding path program 1 times [2020-08-22 01:18:24,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:24,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338633712] [2020-08-22 01:18:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,129 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:25,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:18:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 01:18:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 01:18:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 01:18:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 01:18:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 01:18:25,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338633712] [2020-08-22 01:18:25,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:25,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:18:25,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279151669] [2020-08-22 01:18:25,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:18:25,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:25,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:18:25,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:18:25,325 INFO L87 Difference]: Start difference. First operand 966 states and 1168 transitions. Second operand 10 states. [2020-08-22 01:18:25,924 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:27,430 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:27,668 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:27,926 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:28,150 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:28,405 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:28,717 INFO L93 Difference]: Finished difference Result 1043 states and 1286 transitions. [2020-08-22 01:18:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:18:28,718 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-22 01:18:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:28,725 INFO L225 Difference]: With dead ends: 1043 [2020-08-22 01:18:28,725 INFO L226 Difference]: Without dead ends: 1040 [2020-08-22 01:18:28,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:18:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-08-22 01:18:28,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 966. [2020-08-22 01:18:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-22 01:18:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1163 transitions. [2020-08-22 01:18:28,881 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1163 transitions. Word has length 132 [2020-08-22 01:18:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:28,881 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1163 transitions. [2020-08-22 01:18:28,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:18:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1163 transitions. [2020-08-22 01:18:28,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 01:18:28,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:28,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:28,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:18:28,885 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:28,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1244866615, now seen corresponding path program 1 times [2020-08-22 01:18:28,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:28,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507353367] [2020-08-22 01:18:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,192 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:18:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 01:18:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 01:18:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 01:18:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 01:18:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 01:18:29,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507353367] [2020-08-22 01:18:29,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:29,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 01:18:29,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738019586] [2020-08-22 01:18:29,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:18:29,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:29,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:18:29,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:18:29,384 INFO L87 Difference]: Start difference. First operand 966 states and 1163 transitions. Second operand 12 states. [2020-08-22 01:18:29,909 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:30,720 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:18:30,977 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:31,225 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:31,439 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:31,664 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:31,989 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:32,689 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:32,962 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:33,238 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:35,049 INFO L93 Difference]: Finished difference Result 2430 states and 3107 transitions. [2020-08-22 01:18:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 01:18:35,050 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-22 01:18:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:35,060 INFO L225 Difference]: With dead ends: 2430 [2020-08-22 01:18:35,061 INFO L226 Difference]: Without dead ends: 1643 [2020-08-22 01:18:35,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-22 01:18:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2020-08-22 01:18:35,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1461. [2020-08-22 01:18:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-08-22 01:18:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1788 transitions. [2020-08-22 01:18:35,335 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1788 transitions. Word has length 136 [2020-08-22 01:18:35,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:35,336 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1788 transitions. [2020-08-22 01:18:35,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:18:35,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1788 transitions. [2020-08-22 01:18:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 01:18:35,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:35,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:35,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 01:18:35,343 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:35,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1692744000, now seen corresponding path program 2 times [2020-08-22 01:18:35,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:35,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341884404] [2020-08-22 01:18:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,715 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:18:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 01:18:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:18:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 01:18:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 01:18:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:36,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:36,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:36,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 01:18:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 01:18:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 01:18:36,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341884404] [2020-08-22 01:18:36,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:36,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 01:18:36,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809912204] [2020-08-22 01:18:36,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 01:18:36,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:36,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 01:18:36,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:18:36,056 INFO L87 Difference]: Start difference. First operand 1461 states and 1788 transitions. Second operand 13 states. [2020-08-22 01:18:37,182 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:37,459 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:39,306 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:18:39,542 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:18:39,786 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:18:40,243 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-22 01:18:41,330 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:18:41,584 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:18:41,873 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:18:43,276 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-22 01:18:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:43,946 INFO L93 Difference]: Finished difference Result 3699 states and 4688 transitions. [2020-08-22 01:18:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 01:18:43,947 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-22 01:18:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:43,961 INFO L225 Difference]: With dead ends: 3699 [2020-08-22 01:18:43,961 INFO L226 Difference]: Without dead ends: 2390 [2020-08-22 01:18:43,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 01:18:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states.