/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:21:56,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:21:56,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:21:56,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:21:56,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:21:56,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:21:56,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:21:56,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:21:56,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:21:56,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:21:56,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:21:56,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:21:56,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:21:56,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:21:56,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:21:56,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:21:56,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:21:56,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:21:56,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:21:56,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:21:56,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:21:56,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:21:56,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:21:56,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:21:56,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:21:56,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:21:56,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:21:56,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:21:56,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:21:56,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:21:56,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:21:56,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:21:56,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:21:56,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:21:56,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:21:56,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:21:56,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:21:56,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:21:56,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:21:56,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:21:56,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:21:56,196 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 [2020-08-18 23:21:56,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:21:56,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:21:56,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:21:56,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:21:56,222 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:21:56,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:21:56,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:21:56,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:21:56,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:21:56,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:21:56,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:21:56,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:21:56,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:21:56,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:21:56,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:21:56,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:21:56,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:21:56,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:21:56,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:21:56,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:21:56,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:21:56,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:21:56,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:21:56,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:21:56,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:21:56,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:21:56,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:21:56,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:21:56,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:21:56,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:21:56,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:21:56,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:21:56,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:21:56,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:21:56,574 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:21:56,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-18 23:21:56,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb07c951c/bd8d301bb27c43dc9ee843f05b0f94d5/FLAG469a4b228 [2020-08-18 23:21:57,248 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:21:57,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-18 23:21:57,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb07c951c/bd8d301bb27c43dc9ee843f05b0f94d5/FLAG469a4b228 [2020-08-18 23:21:57,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb07c951c/bd8d301bb27c43dc9ee843f05b0f94d5 [2020-08-18 23:21:57,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:21:57,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:21:57,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:21:57,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:21:57,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:21:57,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:21:57" (1/1) ... [2020-08-18 23:21:57,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38485d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:57, skipping insertion in model container [2020-08-18 23:21:57,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:21:57" (1/1) ... [2020-08-18 23:21:57,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:21:57,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:21:58,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:21:58,088 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:21:58,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:21:58,200 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:21:58,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58 WrapperNode [2020-08-18 23:21:58,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:21:58,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:21:58,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:21:58,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:21:58,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58" (1/1) ... [2020-08-18 23:21:58,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58" (1/1) ... [2020-08-18 23:21:58,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58" (1/1) ... [2020-08-18 23:21:58,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58" (1/1) ... [2020-08-18 23:21:58,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58" (1/1) ... [2020-08-18 23:21:58,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58" (1/1) ... [2020-08-18 23:21:58,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58" (1/1) ... [2020-08-18 23:21:58,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:21:58,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:21:58,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:21:58,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:21:58,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58" (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 [2020-08-18 23:21:58,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:21:58,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:21:58,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:21:58,356 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:21:58,356 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:21:58,356 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:21:58,356 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:21:58,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:21:58,356 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:21:58,357 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:21:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:21:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:21:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 23:21:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:21:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:21:58,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:21:58,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:21:58,359 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:21:58,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:21:58,360 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 23:21:58,360 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:21:58,360 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:21:58,361 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:21:58,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:21:58,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:21:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:21:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:21:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:21:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:21:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:21:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:21:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:21:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:21:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:21:58,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:21:58,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:21:58,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:21:58,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:21:58,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 23:21:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:21:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:21:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:21:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:21:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:21:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:21:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:21:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 23:21:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:21:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:21:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:21:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:21:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:21:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:21:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:21:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 23:21:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:21:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:21:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:21:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 23:21:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:21:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:21:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:21:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:21:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:21:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:21:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:21:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:21:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:21:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:21:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:21:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:21:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:21:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:21:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:21:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:21:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:21:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:21:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:21:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:21:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:21:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:21:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:21:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:21:59,470 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:21:59,470 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:21:59,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:21:59 BoogieIcfgContainer [2020-08-18 23:21:59,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:21:59,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:21:59,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:21:59,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:21:59,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:21:57" (1/3) ... [2020-08-18 23:21:59,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37895461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:21:59, skipping insertion in model container [2020-08-18 23:21:59,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:21:58" (2/3) ... [2020-08-18 23:21:59,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37895461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:21:59, skipping insertion in model container [2020-08-18 23:21:59,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:21:59" (3/3) ... [2020-08-18 23:21:59,485 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-18 23:21:59,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:21:59,505 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:21:59,521 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:21:59,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:21:59,547 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:21:59,547 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:21:59,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:21:59,548 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:21:59,548 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:21:59,548 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:21:59,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:21:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-18 23:21:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:21:59,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:59,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:21:59,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:59,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:59,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-18 23:21:59,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:59,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583939516] [2020-08-18 23:21:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:00,303 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:00,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:00,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:00,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:22:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:22:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:22:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:00,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583939516] [2020-08-18 23:22:00,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:00,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:22:00,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621790029] [2020-08-18 23:22:00,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:22:00,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:00,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:22:00,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:22:00,438 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-18 23:22:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:01,596 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-18 23:22:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:22:01,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 23:22:01,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:01,614 INFO L225 Difference]: With dead ends: 296 [2020-08-18 23:22:01,614 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 23:22:01,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:22:01,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 23:22:01,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-18 23:22:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 23:22:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-18 23:22:01,731 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-18 23:22:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:01,732 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-18 23:22:01,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:22:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-18 23:22:01,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 23:22:01,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:01,745 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] [2020-08-18 23:22:01,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:22:01,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:01,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:01,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-18 23:22:01,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:01,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238065277] [2020-08-18 23:22:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:02,109 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:02,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:02,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:02,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:22:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:02,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:22:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:02,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:22:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:02,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238065277] [2020-08-18 23:22:02,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:02,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:22:02,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663616476] [2020-08-18 23:22:02,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:22:02,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:02,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:22:02,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:22:02,162 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-18 23:22:02,632 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:03,395 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-18 23:22:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:22:03,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 23:22:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:03,399 INFO L225 Difference]: With dead ends: 225 [2020-08-18 23:22:03,400 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 23:22:03,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:22:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 23:22:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 23:22:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 23:22:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-18 23:22:03,439 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-18 23:22:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:03,439 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-18 23:22:03,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:22:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-18 23:22:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 23:22:03,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:03,441 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] [2020-08-18 23:22:03,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:22:03,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:03,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:03,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-18 23:22:03,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:03,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091607094] [2020-08-18 23:22:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:03,762 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:03,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:03,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:22:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:22:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 23:22:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:03,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091607094] [2020-08-18 23:22:03,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:03,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:22:03,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277770660] [2020-08-18 23:22:03,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:22:03,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:03,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:22:03,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:22:03,934 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-18 23:22:04,310 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:04,619 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:04,887 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:05,136 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:06,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:06,251 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-18 23:22:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:22:06,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 23:22:06,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:06,258 INFO L225 Difference]: With dead ends: 238 [2020-08-18 23:22:06,258 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 23:22:06,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:06,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 23:22:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 23:22:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 23:22:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-18 23:22:06,298 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-18 23:22:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:06,299 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-18 23:22:06,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:22:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-18 23:22:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 23:22:06,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:06,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:06,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:22:06,302 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:06,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-18 23:22:06,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:06,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72989662] [2020-08-18 23:22:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,594 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:22:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 23:22:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 23:22:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 23:22:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:06,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72989662] [2020-08-18 23:22:06,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:06,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:22:06,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747827155] [2020-08-18 23:22:06,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:22:06,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:06,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:22:06,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:22:06,705 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-18 23:22:07,072 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:08,192 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:08,844 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-18 23:22:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:22:08,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-18 23:22:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:08,853 INFO L225 Difference]: With dead ends: 338 [2020-08-18 23:22:08,853 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 23:22:08,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:22:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 23:22:08,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-18 23:22:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-18 23:22:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-18 23:22:08,916 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-18 23:22:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:08,916 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-18 23:22:08,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:22:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-18 23:22:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-18 23:22:08,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:08,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:08,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:22:08,919 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:08,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:08,919 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-18 23:22:08,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:08,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612715885] [2020-08-18 23:22:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,213 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:09,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:22:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 23:22:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 23:22:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 23:22:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:09,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612715885] [2020-08-18 23:22:09,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:09,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:22:09,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639555206] [2020-08-18 23:22:09,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:22:09,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:09,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:22:09,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:22:09,306 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-18 23:22:09,728 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:11,102 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:11,384 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:11,628 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:11,868 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:12,506 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-18 23:22:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 23:22:12,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-18 23:22:12,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:12,514 INFO L225 Difference]: With dead ends: 555 [2020-08-18 23:22:12,514 INFO L226 Difference]: Without dead ends: 378 [2020-08-18 23:22:12,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:22:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-18 23:22:12,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-18 23:22:12,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-18 23:22:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-18 23:22:12,604 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-18 23:22:12,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:12,604 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-18 23:22:12,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:22:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-18 23:22:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 23:22:12,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:12,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:12,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:22:12,607 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:12,608 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-18 23:22:12,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:12,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732564317] [2020-08-18 23:22:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:12,939 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:12,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:12,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 23:22:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 23:22:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 23:22:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:13,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732564317] [2020-08-18 23:22:13,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:13,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:22:13,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762796899] [2020-08-18 23:22:13,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:22:13,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:13,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:22:13,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:22:13,065 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-18 23:22:13,424 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:13,986 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:15,570 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:17,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:17,195 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-18 23:22:17,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 23:22:17,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 23:22:17,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:17,202 INFO L225 Difference]: With dead ends: 815 [2020-08-18 23:22:17,202 INFO L226 Difference]: Without dead ends: 627 [2020-08-18 23:22:17,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 23:22:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-18 23:22:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-18 23:22:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-18 23:22:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-18 23:22:17,311 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-18 23:22:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:17,312 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-18 23:22:17,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:22:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-18 23:22:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 23:22:17,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:17,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:17,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:22:17,314 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:17,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:17,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-18 23:22:17,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:17,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608380755] [2020-08-18 23:22:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,562 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 23:22:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 23:22:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 23:22:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:17,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608380755] [2020-08-18 23:22:17,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:17,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:22:17,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718787350] [2020-08-18 23:22:17,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:22:17,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:17,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:22:17,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:22:17,747 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-18 23:22:18,669 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:18,909 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:19,170 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:20,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:20,072 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-18 23:22:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:22:20,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 23:22:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:20,082 INFO L225 Difference]: With dead ends: 1006 [2020-08-18 23:22:20,082 INFO L226 Difference]: Without dead ends: 601 [2020-08-18 23:22:20,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-18 23:22:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-18 23:22:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-18 23:22:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-18 23:22:20,208 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-18 23:22:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:20,208 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-18 23:22:20,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:22:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-18 23:22:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 23:22:20,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:20,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:20,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:22:20,211 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:20,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-18 23:22:20,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:20,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556208174] [2020-08-18 23:22:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,450 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 23:22:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 23:22:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 23:22:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:20,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556208174] [2020-08-18 23:22:20,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:20,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:22:20,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194438135] [2020-08-18 23:22:20,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:22:20,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:20,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:22:20,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:20,625 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-18 23:22:21,390 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:21,638 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:21,868 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:22,550 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:22,774 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:23,062 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:23,293 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:24,259 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-18 23:22:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:22:24,259 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 23:22:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:24,266 INFO L225 Difference]: With dead ends: 1144 [2020-08-18 23:22:24,266 INFO L226 Difference]: Without dead ends: 612 [2020-08-18 23:22:24,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 23:22:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-18 23:22:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-18 23:22:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-18 23:22:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-18 23:22:24,439 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-18 23:22:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:24,439 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-18 23:22:24,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:22:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-18 23:22:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 23:22:24,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:24,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:24,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:22:24,445 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:24,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:24,445 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-18 23:22:24,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:24,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120656532] [2020-08-18 23:22:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,750 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:24,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 23:22:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 23:22:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 23:22:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 23:22:24,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120656532] [2020-08-18 23:22:24,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:22:24,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 23:22:24,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161766232] [2020-08-18 23:22:24,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:22:24,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:24,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:22:24,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:24,952 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-18 23:22:25,449 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:26,173 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:27,004 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:27,311 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:27,584 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:27,835 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:28,122 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:28,381 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:28,845 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-18 23:22:29,125 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:29,406 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:29,692 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 23:22:31,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:31,727 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-18 23:22:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 23:22:31,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-18 23:22:31,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:31,736 INFO L225 Difference]: With dead ends: 1664 [2020-08-18 23:22:31,736 INFO L226 Difference]: Without dead ends: 1125 [2020-08-18 23:22:31,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-18 23:22:31,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-18 23:22:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-18 23:22:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-18 23:22:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-18 23:22:31,901 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-18 23:22:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:31,902 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-18 23:22:31,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:22:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-18 23:22:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-18 23:22:31,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:31,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:31,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:22:31,905 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:31,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:31,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-18 23:22:31,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:31,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558771741] [2020-08-18 23:22:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,189 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:32,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:22:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:22:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:22:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 23:22:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 23:22:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 23:22:32,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558771741] [2020-08-18 23:22:32,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:32,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 23:22:32,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152565914] [2020-08-18 23:22:32,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 23:22:32,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:32,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 23:22:32,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:22:32,415 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-18 23:22:33,399 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:33,629 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:33,858 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:34,521 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:35,345 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:35,700 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:36,293 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:36,570 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:36,855 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:38,653 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-18 23:22:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 23:22:38,654 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-18 23:22:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:38,661 INFO L225 Difference]: With dead ends: 2205 [2020-08-18 23:22:38,661 INFO L226 Difference]: Without dead ends: 1167 [2020-08-18 23:22:38,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 23:22:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-18 23:22:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-18 23:22:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-18 23:22:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-18 23:22:38,828 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-18 23:22:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:38,829 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-18 23:22:38,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 23:22:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-18 23:22:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-18 23:22:38,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:38,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:38,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:22:38,832 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:38,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:38,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-18 23:22:38,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:38,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11342251] [2020-08-18 23:22:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,233 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:39,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:22:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 23:22:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 23:22:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 23:22:39,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11342251] [2020-08-18 23:22:39,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:39,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:22:39,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595628007] [2020-08-18 23:22:39,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:22:39,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:39,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:22:39,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:22:39,384 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-18 23:22:39,966 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:40,197 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:40,436 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:41,557 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:42,077 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:42,398 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:42,678 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:43,350 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-18 23:22:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 23:22:43,351 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-18 23:22:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:43,352 INFO L225 Difference]: With dead ends: 1688 [2020-08-18 23:22:43,353 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 23:22:43,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-18 23:22:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 23:22:43,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 23:22:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 23:22:43,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 23:22:43,358 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-18 23:22:43,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:43,358 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 23:22:43,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:22:43,359 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 23:22:43,359 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 23:22:43,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:22:43,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 23:22:44,701 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-18 23:22:47,844 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-18 23:22:48,430 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-18 23:22:48,746 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-18 23:22:49,257 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-18 23:22:50,305 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-18 23:22:51,493 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-18 23:22:51,668 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 23:22:52,141 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-18 23:22:52,315 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-18 23:22:52,592 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-18 23:22:52,762 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-18 23:22:53,950 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-18 23:22:54,117 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 23:22:54,910 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-18 23:22:55,215 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27