/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=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:50:02,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:50:02,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:50:02,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:50:02,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:50:02,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:50:02,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:50:02,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:50:02,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:50:02,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:50:02,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:50:02,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:50:02,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:50:02,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:50:02,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:50:02,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:50:02,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:50:02,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:50:02,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:50:02,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:50:02,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:50:02,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:50:02,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:50:02,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:50:02,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:50:02,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:50:02,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:50:02,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:50:02,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:50:02,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:50:02,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:50:02,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:50:02,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:50:02,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:50:02,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:50:02,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:50:02,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:50:02,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:50:02,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:50:02,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:50:02,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:50:02,198 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:50:02,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:50:02,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:50:02,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:50:02,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:50:02,238 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:50:02,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:50:02,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:50:02,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:50:02,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:50:02,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:50:02,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:50:02,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:50:02,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:50:02,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:50:02,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:50:02,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:50:02,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:50:02,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:50:02,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:50:02,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:50:02,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:50:02,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:50:02,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:50:02,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:50:02,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:50:02,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:50:02,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:50:02,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:50:02,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:50:02,244 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=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:50:02,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:50:02,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:50:02,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:50:02,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:50:02,601 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:50:02,602 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-19 01:50:02,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03c1b5d35/71b3bbdd9d3149a5ba219b9e8e67ec1e/FLAG124c48382 [2020-08-19 01:50:03,234 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:50:03,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-19 01:50:03,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03c1b5d35/71b3bbdd9d3149a5ba219b9e8e67ec1e/FLAG124c48382 [2020-08-19 01:50:03,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03c1b5d35/71b3bbdd9d3149a5ba219b9e8e67ec1e [2020-08-19 01:50:03,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:50:03,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:50:03,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:50:03,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:50:03,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:50:03,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:50:03" (1/1) ... [2020-08-19 01:50:03,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@150182de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:03, skipping insertion in model container [2020-08-19 01:50:03,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:50:03" (1/1) ... [2020-08-19 01:50:03,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:50:03,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:50:03,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:50:04,073 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:50:04,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:50:04,201 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:50:04,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04 WrapperNode [2020-08-19 01:50:04,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:50:04,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:50:04,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:50:04,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:50:04,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04" (1/1) ... [2020-08-19 01:50:04,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04" (1/1) ... [2020-08-19 01:50:04,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04" (1/1) ... [2020-08-19 01:50:04,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04" (1/1) ... [2020-08-19 01:50:04,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04" (1/1) ... [2020-08-19 01:50:04,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04" (1/1) ... [2020-08-19 01:50:04,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04" (1/1) ... [2020-08-19 01:50:04,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:50:04,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:50:04,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:50:04,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:50:04,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:50:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:50:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:50:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:50:04,391 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:50:04,391 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:50:04,391 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:50:04,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:50:04,392 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:50:04,392 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:50:04,393 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:50:04,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:50:04,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:50:04,394 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:50:04,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:50:04,394 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 01:50:04,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:50:04,396 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:50:04,396 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:50:04,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:50:04,396 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:50:04,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:50:04,396 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:50:04,397 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:50:04,397 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:50:04,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:50:04,398 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:50:04,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:50:04,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:50:04,399 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:50:04,399 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:50:04,399 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:50:04,399 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:50:04,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:50:04,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:50:04,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:50:04,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:50:04,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:50:04,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:50:04,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:50:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:50:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:50:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:50:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:50:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:50:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 01:50:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:50:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:50:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:50:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:50:04,402 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:50:04,402 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:50:04,402 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:50:04,402 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:50:04,402 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:50:04,403 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:50:04,403 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:50:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:50:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:50:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:50:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:50:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:50:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:50:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:50:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:50:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:50:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:50:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:50:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:50:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:50:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:50:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:50:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:50:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:50:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:50:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:50:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:50:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:50:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:50:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:50:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:50:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:50:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:50:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:50:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:50:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:50:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:50:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:50:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:50:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:50:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:50:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:50:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:50:05,604 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:50:05,605 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:50:05,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:50:05 BoogieIcfgContainer [2020-08-19 01:50:05,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:50:05,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:50:05,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:50:05,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:50:05,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:50:03" (1/3) ... [2020-08-19 01:50:05,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad2b922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:50:05, skipping insertion in model container [2020-08-19 01:50:05,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:50:04" (2/3) ... [2020-08-19 01:50:05,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad2b922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:50:05, skipping insertion in model container [2020-08-19 01:50:05,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:50:05" (3/3) ... [2020-08-19 01:50:05,618 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-08-19 01:50:05,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:50:05,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:50:05,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:50:05,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:50:05,673 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:50:05,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:50:05,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:50:05,674 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:50:05,674 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:50:05,674 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:50:05,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:50:05,698 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-19 01:50:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:50:05,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:05,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:05,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:05,717 INFO L82 PathProgramCache]: Analyzing trace with hash 104665002, now seen corresponding path program 1 times [2020-08-19 01:50:05,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:05,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123685548] [2020-08-19 01:50:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:06,448 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:06,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:06,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:06,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:06,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:50:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:06,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:50:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:06,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123685548] [2020-08-19 01:50:06,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:06,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:50:06,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625183231] [2020-08-19 01:50:06,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:50:06,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:06,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:50:06,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:50:06,560 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-19 01:50:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:07,701 INFO L93 Difference]: Finished difference Result 301 states and 388 transitions. [2020-08-19 01:50:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:50:07,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 01:50:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:07,721 INFO L225 Difference]: With dead ends: 301 [2020-08-19 01:50:07,721 INFO L226 Difference]: Without dead ends: 163 [2020-08-19 01:50:07,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:50:07,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-19 01:50:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-19 01:50:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 01:50:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-19 01:50:07,863 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 46 [2020-08-19 01:50:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:07,865 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-19 01:50:07,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:50:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-19 01:50:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:50:07,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:07,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:07,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:50:07,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:07,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:07,873 INFO L82 PathProgramCache]: Analyzing trace with hash 149584290, now seen corresponding path program 1 times [2020-08-19 01:50:07,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:07,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974043687] [2020-08-19 01:50:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:08,272 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:08,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:08,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:08,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:08,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:08,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:50:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:50:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:08,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974043687] [2020-08-19 01:50:08,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:08,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:50:08,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131767433] [2020-08-19 01:50:08,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:50:08,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:08,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:50:08,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:50:08,315 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 4 states. [2020-08-19 01:50:08,745 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:09,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:09,505 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2020-08-19 01:50:09,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:50:09,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 01:50:09,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:09,514 INFO L225 Difference]: With dead ends: 225 [2020-08-19 01:50:09,515 INFO L226 Difference]: Without dead ends: 147 [2020-08-19 01:50:09,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:50:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-19 01:50:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-19 01:50:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 01:50:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 137 transitions. [2020-08-19 01:50:09,549 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 137 transitions. Word has length 47 [2020-08-19 01:50:09,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:09,549 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 137 transitions. [2020-08-19 01:50:09,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:50:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 137 transitions. [2020-08-19 01:50:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 01:50:09,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:09,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:09,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:50:09,552 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:09,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:09,552 INFO L82 PathProgramCache]: Analyzing trace with hash 964261252, now seen corresponding path program 1 times [2020-08-19 01:50:09,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:09,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157345110] [2020-08-19 01:50:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:09,853 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:09,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:09,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:50:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:09,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:50:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:09,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157345110] [2020-08-19 01:50:09,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:09,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:50:09,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553963246] [2020-08-19 01:50:09,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:50:09,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:09,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:50:09,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:50:09,951 INFO L87 Difference]: Start difference. First operand 120 states and 137 transitions. Second operand 8 states. [2020-08-19 01:50:10,288 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:10,599 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:10,849 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:11,124 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:11,857 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:13,546 INFO L93 Difference]: Finished difference Result 412 states and 501 transitions. [2020-08-19 01:50:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:50:13,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 01:50:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:13,553 INFO L225 Difference]: With dead ends: 412 [2020-08-19 01:50:13,556 INFO L226 Difference]: Without dead ends: 316 [2020-08-19 01:50:13,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:50:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-19 01:50:13,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 246. [2020-08-19 01:50:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-19 01:50:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 290 transitions. [2020-08-19 01:50:13,629 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 290 transitions. Word has length 51 [2020-08-19 01:50:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:13,629 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 290 transitions. [2020-08-19 01:50:13,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:50:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 290 transitions. [2020-08-19 01:50:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:50:13,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:13,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:13,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:50:13,632 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1270230841, now seen corresponding path program 1 times [2020-08-19 01:50:13,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:13,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299137828] [2020-08-19 01:50:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:13,942 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:13,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:13,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:13,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:13,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:50:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:50:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:50:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:14,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299137828] [2020-08-19 01:50:14,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:14,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:50:14,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058057826] [2020-08-19 01:50:14,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:50:14,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:14,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:50:14,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:14,066 INFO L87 Difference]: Start difference. First operand 246 states and 290 transitions. Second operand 12 states. [2020-08-19 01:50:14,488 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:14,810 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:15,063 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:15,309 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:15,862 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:16,636 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:16,968 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:17,243 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:17,530 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:17,767 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:18,111 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:18,363 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:18,605 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:20,388 INFO L93 Difference]: Finished difference Result 993 states and 1338 transitions. [2020-08-19 01:50:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:50:20,390 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 01:50:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:20,399 INFO L225 Difference]: With dead ends: 993 [2020-08-19 01:50:20,400 INFO L226 Difference]: Without dead ends: 771 [2020-08-19 01:50:20,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:50:20,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-08-19 01:50:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 678. [2020-08-19 01:50:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-19 01:50:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 836 transitions. [2020-08-19 01:50:20,581 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 836 transitions. Word has length 57 [2020-08-19 01:50:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:20,581 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 836 transitions. [2020-08-19 01:50:20,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:50:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 836 transitions. [2020-08-19 01:50:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 01:50:20,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:20,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:20,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:50:20,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:20,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1043234783, now seen corresponding path program 1 times [2020-08-19 01:50:20,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:20,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540365486] [2020-08-19 01:50:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,863 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:20,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:50:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:50:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:50:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:50:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:50:20,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540365486] [2020-08-19 01:50:20,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:50:20,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:50:20,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655395368] [2020-08-19 01:50:20,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:50:20,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:20,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:50:20,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:50:20,956 INFO L87 Difference]: Start difference. First operand 678 states and 836 transitions. Second operand 6 states. [2020-08-19 01:50:21,296 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:22,815 INFO L93 Difference]: Finished difference Result 1641 states and 2151 transitions. [2020-08-19 01:50:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:50:22,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 01:50:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:22,825 INFO L225 Difference]: With dead ends: 1641 [2020-08-19 01:50:22,825 INFO L226 Difference]: Without dead ends: 987 [2020-08-19 01:50:22,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:50:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-19 01:50:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 924. [2020-08-19 01:50:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-08-19 01:50:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1148 transitions. [2020-08-19 01:50:22,991 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1148 transitions. Word has length 61 [2020-08-19 01:50:22,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:22,991 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1148 transitions. [2020-08-19 01:50:22,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:50:22,991 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1148 transitions. [2020-08-19 01:50:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 01:50:22,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:22,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:22,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:50:22,996 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1818048574, now seen corresponding path program 1 times [2020-08-19 01:50:22,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:22,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334790370] [2020-08-19 01:50:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,277 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:50:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:50:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:50:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 01:50:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 01:50:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 01:50:23,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334790370] [2020-08-19 01:50:23,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:23,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:50:23,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217963989] [2020-08-19 01:50:23,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:50:23,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:23,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:50:23,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:50:23,460 INFO L87 Difference]: Start difference. First operand 924 states and 1148 transitions. Second operand 10 states. [2020-08-19 01:50:24,414 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 01:50:24,954 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:26,905 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:28,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:28,390 INFO L93 Difference]: Finished difference Result 1747 states and 2251 transitions. [2020-08-19 01:50:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:50:28,391 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 01:50:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:28,399 INFO L225 Difference]: With dead ends: 1747 [2020-08-19 01:50:28,399 INFO L226 Difference]: Without dead ends: 1110 [2020-08-19 01:50:28,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:50:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-08-19 01:50:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1031. [2020-08-19 01:50:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-08-19 01:50:28,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1260 transitions. [2020-08-19 01:50:28,617 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1260 transitions. Word has length 88 [2020-08-19 01:50:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:28,619 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1260 transitions. [2020-08-19 01:50:28,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:50:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1260 transitions. [2020-08-19 01:50:28,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 01:50:28,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:28,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:28,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:50:28,625 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:28,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:28,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2006328465, now seen corresponding path program 1 times [2020-08-19 01:50:28,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:28,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313343218] [2020-08-19 01:50:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,904 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:50:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:50:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:50:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:50:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 01:50:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:50:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 01:50:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 01:50:29,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313343218] [2020-08-19 01:50:29,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:29,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:50:29,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730592328] [2020-08-19 01:50:29,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:50:29,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:29,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:50:29,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:50:29,132 INFO L87 Difference]: Start difference. First operand 1031 states and 1260 transitions. Second operand 10 states. [2020-08-19 01:50:30,009 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:30,290 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:50:30,535 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:30,792 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:31,780 INFO L93 Difference]: Finished difference Result 2179 states and 2840 transitions. [2020-08-19 01:50:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:50:31,781 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-19 01:50:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:31,789 INFO L225 Difference]: With dead ends: 2179 [2020-08-19 01:50:31,789 INFO L226 Difference]: Without dead ends: 1172 [2020-08-19 01:50:31,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:50:31,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-08-19 01:50:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1061. [2020-08-19 01:50:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-08-19 01:50:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1294 transitions. [2020-08-19 01:50:32,025 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1294 transitions. Word has length 128 [2020-08-19 01:50:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:32,026 INFO L479 AbstractCegarLoop]: Abstraction has 1061 states and 1294 transitions. [2020-08-19 01:50:32,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:50:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1294 transitions. [2020-08-19 01:50:32,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 01:50:32,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:32,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:32,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:50:32,031 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:32,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:32,031 INFO L82 PathProgramCache]: Analyzing trace with hash -721880881, now seen corresponding path program 1 times [2020-08-19 01:50:32,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:32,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603792097] [2020-08-19 01:50:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,303 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:50:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:50:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:50:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:50:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 01:50:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:50:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 01:50:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 01:50:32,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603792097] [2020-08-19 01:50:32,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:32,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:50:32,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144255739] [2020-08-19 01:50:32,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:50:32,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:32,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:50:32,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:32,501 INFO L87 Difference]: Start difference. First operand 1061 states and 1294 transitions. Second operand 12 states. [2020-08-19 01:50:33,066 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:33,333 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:33,552 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:34,189 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:34,479 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:34,731 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:35,773 INFO L93 Difference]: Finished difference Result 1923 states and 2415 transitions. [2020-08-19 01:50:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:50:35,773 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-19 01:50:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:35,780 INFO L225 Difference]: With dead ends: 1923 [2020-08-19 01:50:35,780 INFO L226 Difference]: Without dead ends: 886 [2020-08-19 01:50:35,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:50:35,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-08-19 01:50:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 836. [2020-08-19 01:50:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-19 01:50:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1009 transitions. [2020-08-19 01:50:35,962 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1009 transitions. Word has length 128 [2020-08-19 01:50:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:35,962 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1009 transitions. [2020-08-19 01:50:35,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:50:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1009 transitions. [2020-08-19 01:50:35,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 01:50:35,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:35,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:35,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:50:35,969 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:35,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:35,970 INFO L82 PathProgramCache]: Analyzing trace with hash 315789474, now seen corresponding path program 1 times [2020-08-19 01:50:35,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:35,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081447182] [2020-08-19 01:50:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,355 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:36,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:50:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:50:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:50:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 01:50:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:50:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 01:50:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:50:36,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081447182] [2020-08-19 01:50:36,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:36,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:50:36,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586549525] [2020-08-19 01:50:36,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:50:36,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:36,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:50:36,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:36,547 INFO L87 Difference]: Start difference. First operand 836 states and 1009 transitions. Second operand 12 states. [2020-08-19 01:50:37,058 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:37,651 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:38,178 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:38,465 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:38,727 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:39,010 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:39,358 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:39,611 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:40,979 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:41,806 INFO L93 Difference]: Finished difference Result 1991 states and 2602 transitions. [2020-08-19 01:50:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 01:50:41,808 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-19 01:50:41,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:41,817 INFO L225 Difference]: With dead ends: 1991 [2020-08-19 01:50:41,817 INFO L226 Difference]: Without dead ends: 1324 [2020-08-19 01:50:41,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2020-08-19 01:50:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-08-19 01:50:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1102. [2020-08-19 01:50:42,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-19 01:50:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1352 transitions. [2020-08-19 01:50:42,029 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1352 transitions. Word has length 128 [2020-08-19 01:50:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:42,031 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1352 transitions. [2020-08-19 01:50:42,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:50:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1352 transitions. [2020-08-19 01:50:42,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-19 01:50:42,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:42,036 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:42,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:50:42,037 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:42,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:42,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1874994186, now seen corresponding path program 2 times [2020-08-19 01:50:42,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:42,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129945526] [2020-08-19 01:50:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:50:42,112 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:50:42,112 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:50:42,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:50:42,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:50:42 BoogieIcfgContainer [2020-08-19 01:50:42,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:50:42,167 INFO L168 Benchmark]: Toolchain (without parser) took 38651.15 ms. Allocated memory was 138.9 MB in the beginning and 749.2 MB in the end (delta: 610.3 MB). Free memory was 100.8 MB in the beginning and 485.0 MB in the end (delta: -384.2 MB). Peak memory consumption was 226.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:42,172 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-19 01:50:42,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.22 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.8 MB in the beginning and 171.1 MB in the end (delta: -70.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:42,177 INFO L168 Benchmark]: Boogie Preprocessor took 109.63 ms. Allocated memory is still 201.9 MB. Free memory was 171.1 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:42,179 INFO L168 Benchmark]: RCFGBuilder took 1297.66 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 167.1 MB in the beginning and 199.2 MB in the end (delta: -32.0 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:42,181 INFO L168 Benchmark]: TraceAbstraction took 36551.04 ms. Allocated memory was 233.8 MB in the beginning and 749.2 MB in the end (delta: 515.4 MB). Free memory was 199.2 MB in the beginning and 485.0 MB in the end (delta: -285.9 MB). Peak memory consumption was 229.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:42,185 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.22 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.8 MB in the beginning and 171.1 MB in the end (delta: -70.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.63 ms. Allocated memory is still 201.9 MB. Free memory was 171.1 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1297.66 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 167.1 MB in the beginning and 199.2 MB in the end (delta: -32.0 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36551.04 ms. Allocated memory was 233.8 MB in the beginning and 749.2 MB in the end (delta: 515.4 MB). Free memory was 199.2 MB in the beginning and 485.0 MB in the end (delta: -285.9 MB). Peak memory consumption was 229.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 310]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L713] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L391] int retValue_acc ; [L392] int tmp ; [L396] FCALL select_helpers() [L397] FCALL select_features() [L398] CALL, EXPR valid_product() [L535] int retValue_acc ; [L538] retValue_acc = 1 [L539] return (retValue_acc); [L398] RET, EXPR valid_product() [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) [L402] FCALL setup() [L403] CALL runTest() [L382] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L433] COND TRUE waterLevel < 2 [L434] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND TRUE ! pumpRunning [L162] CALL, EXPR isHighWaterLevel() [L272] int retValue_acc ; [L273] int tmp ; [L274] int tmp___0 ; [L278] CALL, EXPR isHighWaterSensorDry() [L495] int retValue_acc ; [L498] COND FALSE !(waterLevel < 2) [L502] retValue_acc = 0 [L503] return (retValue_acc); [L278] RET, EXPR isHighWaterSensorDry() [L278] tmp = isHighWaterSensorDry() [L280] COND FALSE !(\read(tmp)) [L283] tmp___0 = 1 [L285] retValue_acc = tmp___0 [L286] return (retValue_acc); [L162] RET, EXPR isHighWaterLevel() [L162] tmp = isHighWaterLevel() [L164] COND TRUE \read(tmp) [L166] CALL activatePump() [L191] int tmp ; [L195] CALL, EXPR isMethaneAlarm() [L216] int retValue_acc ; [L220] CALL, EXPR isMethaneLevelCritical() [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L220] RET, EXPR isMethaneLevelCritical() [L220] retValue_acc = isMethaneLevelCritical() [L222] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) [L201] CALL activatePump__wrappee__highWaterSensor() [L185] pumpRunning = 1 [L201] RET activatePump__wrappee__highWaterSensor() [L166] RET activatePump() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND TRUE tmp == 0 [L920] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___0 = isPumpRunning() [L922] COND TRUE \read(tmp___0) [L924] CALL __automaton_fail() [L310] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 30.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1120 SDtfs, 2476 SDslu, 1336 SDs, 0 SdLazy, 7073 SolverSat, 1641 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 386 GetRequests, 252 SyntacticMatches, 6 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 749 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 897 NumberOfCodeBlocks, 897 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 725 ConstructedInterpolants, 0 QuantifiedInterpolants, 245828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 80/95 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...