/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:19:46,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:19:46,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:19:46,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:19:46,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:19:46,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:19:46,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:19:46,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:19:46,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:19:46,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:19:46,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:19:46,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:19:46,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:19:46,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:19:46,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:19:46,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:19:46,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:19:46,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:19:46,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:19:46,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:19:46,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:19:46,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:19:46,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:19:46,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:19:46,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:19:46,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:19:46,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:19:46,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:19:46,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:19:46,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:19:46,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:19:46,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:19:46,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:19:46,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:19:46,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:19:46,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:19:46,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:19:46,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:19:46,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:19:46,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:19:46,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:19:46,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 20:19:46,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:19:46,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:19:46,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:19:46,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:19:46,229 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:19:46,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:19:46,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:19:46,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:19:46,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:19:46,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:19:46,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:19:46,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:19:46,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:19:46,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:19:46,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:19:46,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:19:46,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:19:46,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:19:46,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:19:46,234 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:19:46,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:19:46,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:19:46,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:19:46,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:19:46,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:19:46,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:19:46,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:19:46,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:19:46,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:19:46,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:19:46,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:19:46,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:19:46,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:19:46,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:19:46,559 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:19:46,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-21 20:19:46,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95c0856c0/5cd6eacfd7fe4e7094259211f84bb0ac/FLAG2e9c8153f [2020-08-21 20:19:47,201 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:19:47,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-21 20:19:47,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95c0856c0/5cd6eacfd7fe4e7094259211f84bb0ac/FLAG2e9c8153f [2020-08-21 20:19:47,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95c0856c0/5cd6eacfd7fe4e7094259211f84bb0ac [2020-08-21 20:19:47,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:19:47,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:19:47,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:19:47,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:19:47,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:19:47,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:19:47" (1/1) ... [2020-08-21 20:19:47,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b1378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:47, skipping insertion in model container [2020-08-21 20:19:47,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:19:47" (1/1) ... [2020-08-21 20:19:47,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:19:47,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:19:47,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:19:47,977 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:19:48,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:19:48,140 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:19:48,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48 WrapperNode [2020-08-21 20:19:48,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:19:48,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:19:48,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:19:48,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:19:48,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48" (1/1) ... [2020-08-21 20:19:48,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48" (1/1) ... [2020-08-21 20:19:48,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48" (1/1) ... [2020-08-21 20:19:48,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48" (1/1) ... [2020-08-21 20:19:48,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48" (1/1) ... [2020-08-21 20:19:48,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48" (1/1) ... [2020-08-21 20:19:48,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48" (1/1) ... [2020-08-21 20:19:48,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:19:48,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:19:48,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:19:48,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:19:48,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:19:48,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:19:48,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:19:48,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:19:48,309 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:19:48,309 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:19:48,309 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:19:48,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:19:48,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:19:48,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:19:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 20:19:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:19:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:19:48,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:19:48,312 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 20:19:48,312 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:19:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:19:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:19:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:19:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:19:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 20:19:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 20:19:48,313 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:19:48,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:19:48,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 20:19:48,314 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:19:48,315 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:19:48,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:19:48,315 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:19:48,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:19:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:19:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:19:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:19:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:19:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:19:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:19:48,316 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:19:48,317 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:19:48,317 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:19:48,317 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:19:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:19:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:19:48,317 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:19:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:19:48,319 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:19:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:19:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:19:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:19:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:19:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 20:19:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:19:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:19:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:19:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:19:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:19:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:19:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 20:19:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 20:19:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:19:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:19:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 20:19:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 20:19:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:19:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:19:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:19:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:19:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:19:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:19:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:19:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:19:48,326 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:19:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:19:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:19:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:19:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:19:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:19:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:19:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:19:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:19:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:19:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:19:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:19:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:19:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:19:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:19:48,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:19:48,330 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:19:48,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:19:48,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:19:48,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:19:49,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:19:49,359 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:19:49,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:19:49 BoogieIcfgContainer [2020-08-21 20:19:49,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:19:49,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:19:49,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:19:49,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:19:49,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:19:47" (1/3) ... [2020-08-21 20:19:49,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7f320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:19:49, skipping insertion in model container [2020-08-21 20:19:49,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:19:48" (2/3) ... [2020-08-21 20:19:49,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7f320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:19:49, skipping insertion in model container [2020-08-21 20:19:49,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:19:49" (3/3) ... [2020-08-21 20:19:49,373 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-08-21 20:19:49,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:19:49,391 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:19:49,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:19:49,423 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:19:49,423 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:19:49,423 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:19:49,423 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:19:49,424 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:19:49,424 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:19:49,424 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:19:49,424 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:19:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 20:19:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 20:19:49,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:19:49,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:19:49,457 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:19:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:19:49,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2058113087, now seen corresponding path program 1 times [2020-08-21 20:19:49,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:19:49,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944732476] [2020-08-21 20:19:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:19:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:50,121 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:19:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:19:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:19:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:19:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:50,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:19:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:19:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:19:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:19:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:19:50,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944732476] [2020-08-21 20:19:50,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:19:50,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:19:50,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317414394] [2020-08-21 20:19:50,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:19:50,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:19:50,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:19:50,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:19:50,217 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-21 20:19:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:19:51,458 INFO L93 Difference]: Finished difference Result 295 states and 384 transitions. [2020-08-21 20:19:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:19:51,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 20:19:51,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:19:51,475 INFO L225 Difference]: With dead ends: 295 [2020-08-21 20:19:51,476 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 20:19:51,480 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 [2020-08-21 20:19:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 20:19:51,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2020-08-21 20:19:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 20:19:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-21 20:19:51,566 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-21 20:19:51,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:19:51,567 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-21 20:19:51,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:19:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-21 20:19:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 20:19:51,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:19:51,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:19:51,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:19:51,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:19:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:19:51,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1232914971, now seen corresponding path program 1 times [2020-08-21 20:19:51,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:19:51,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919754190] [2020-08-21 20:19:51,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:19:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:51,908 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:19:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:19:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:51,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:19:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:19:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:51,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:19:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:19:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:51,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:19:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:19:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:19:51,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919754190] [2020-08-21 20:19:51,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:19:51,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:19:51,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001288468] [2020-08-21 20:19:51,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:19:51,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:19:51,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:19:51,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:19:51,953 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-21 20:19:52,396 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:19:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:19:53,154 INFO L93 Difference]: Finished difference Result 219 states and 265 transitions. [2020-08-21 20:19:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:19:53,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 20:19:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:19:53,159 INFO L225 Difference]: With dead ends: 219 [2020-08-21 20:19:53,159 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 20:19:53,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:19:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 20:19:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2020-08-21 20:19:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 20:19:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-21 20:19:53,200 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-21 20:19:53,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:19:53,200 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-21 20:19:53,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:19:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-21 20:19:53,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 20:19:53,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:19:53,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:19:53,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:19:53,203 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:19:53,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:19:53,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1264843506, now seen corresponding path program 1 times [2020-08-21 20:19:53,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:19:53,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63992623] [2020-08-21 20:19:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:19:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:53,526 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:19:53,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:19:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:53,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:19:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:53,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:19:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:19:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:19:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:19:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:19:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:19:53,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63992623] [2020-08-21 20:19:53,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:19:53,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:19:53,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344527669] [2020-08-21 20:19:53,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:19:53,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:19:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:19:53,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:19:53,640 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-21 20:19:54,086 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:19:54,413 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:19:54,655 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:19:54,896 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:19:55,606 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:19:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:19:57,288 INFO L93 Difference]: Finished difference Result 403 states and 495 transitions. [2020-08-21 20:19:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:19:57,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 20:19:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:19:57,294 INFO L225 Difference]: With dead ends: 403 [2020-08-21 20:19:57,295 INFO L226 Difference]: Without dead ends: 310 [2020-08-21 20:19:57,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:19:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-21 20:19:57,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 240. [2020-08-21 20:19:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-21 20:19:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2020-08-21 20:19:57,367 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 51 [2020-08-21 20:19:57,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:19:57,368 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2020-08-21 20:19:57,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:19:57,368 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2020-08-21 20:19:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 20:19:57,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:19:57,370 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] [2020-08-21 20:19:57,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:19:57,371 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:19:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:19:57,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1557328557, now seen corresponding path program 1 times [2020-08-21 20:19:57,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:19:57,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265450224] [2020-08-21 20:19:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:19:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:57,666 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:19:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:19:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:57,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:19:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:57,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:19:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:57,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:19:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:57,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:19:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:57,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:19:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:19:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:57,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:19:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:19:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:19:57,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265450224] [2020-08-21 20:19:57,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:19:57,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:19:57,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161239377] [2020-08-21 20:19:57,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:19:57,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:19:57,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:19:57,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:19:57,784 INFO L87 Difference]: Start difference. First operand 240 states and 286 transitions. Second operand 8 states. [2020-08-21 20:19:58,180 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:19:59,198 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:19:59,508 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:19:59,762 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:00,030 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:00,372 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:01,298 INFO L93 Difference]: Finished difference Result 778 states and 999 transitions. [2020-08-21 20:20:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 20:20:01,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 20:20:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:01,310 INFO L225 Difference]: With dead ends: 778 [2020-08-21 20:20:01,310 INFO L226 Difference]: Without dead ends: 562 [2020-08-21 20:20:01,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:20:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-21 20:20:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 435. [2020-08-21 20:20:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-21 20:20:01,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 522 transitions. [2020-08-21 20:20:01,442 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 522 transitions. Word has length 57 [2020-08-21 20:20:01,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:01,443 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 522 transitions. [2020-08-21 20:20:01,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:20:01,443 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 522 transitions. [2020-08-21 20:20:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 20:20:01,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:01,446 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] [2020-08-21 20:20:01,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:20:01,447 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:01,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2005186865, now seen corresponding path program 1 times [2020-08-21 20:20:01,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:01,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552347054] [2020-08-21 20:20:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,742 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:20:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:20:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:20:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 20:20:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:20:01,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552347054] [2020-08-21 20:20:01,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:01,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:20:01,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557080965] [2020-08-21 20:20:01,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:20:01,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:01,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:20:01,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:20:01,875 INFO L87 Difference]: Start difference. First operand 435 states and 522 transitions. Second operand 9 states. [2020-08-21 20:20:02,259 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:03,264 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:03,607 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:03,875 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:04,446 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:04,753 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:05,583 INFO L93 Difference]: Finished difference Result 1224 states and 1608 transitions. [2020-08-21 20:20:05,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 20:20:05,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-21 20:20:05,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:05,592 INFO L225 Difference]: With dead ends: 1224 [2020-08-21 20:20:05,592 INFO L226 Difference]: Without dead ends: 813 [2020-08-21 20:20:05,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 20:20:05,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-08-21 20:20:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 655. [2020-08-21 20:20:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-21 20:20:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 799 transitions. [2020-08-21 20:20:05,741 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 799 transitions. Word has length 61 [2020-08-21 20:20:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:05,741 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 799 transitions. [2020-08-21 20:20:05,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:20:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 799 transitions. [2020-08-21 20:20:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 20:20:05,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:05,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:05,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:20:05,746 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:05,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:05,746 INFO L82 PathProgramCache]: Analyzing trace with hash 90269024, now seen corresponding path program 1 times [2020-08-21 20:20:05,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:05,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567366565] [2020-08-21 20:20:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,029 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:20:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:20:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 20:20:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 20:20:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:20:06,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567366565] [2020-08-21 20:20:06,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:06,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:20:06,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002948357] [2020-08-21 20:20:06,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:20:06,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:06,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:20:06,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:20:06,257 INFO L87 Difference]: Start difference. First operand 655 states and 799 transitions. Second operand 9 states. [2020-08-21 20:20:06,965 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:07,819 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:08,071 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:20:08,377 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:08,671 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:20:10,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:10,516 INFO L93 Difference]: Finished difference Result 2244 states and 3141 transitions. [2020-08-21 20:20:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 20:20:10,517 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 20:20:10,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:10,531 INFO L225 Difference]: With dead ends: 2244 [2020-08-21 20:20:10,532 INFO L226 Difference]: Without dead ends: 1613 [2020-08-21 20:20:10,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:20:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-08-21 20:20:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1239. [2020-08-21 20:20:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-08-21 20:20:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1508 transitions. [2020-08-21 20:20:10,860 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1508 transitions. Word has length 93 [2020-08-21 20:20:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:10,862 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1508 transitions. [2020-08-21 20:20:10,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:20:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1508 transitions. [2020-08-21 20:20:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 20:20:10,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:10,872 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:10,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:20:10,874 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:10,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:10,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1880670433, now seen corresponding path program 1 times [2020-08-21 20:20:10,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:10,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310226550] [2020-08-21 20:20:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,258 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:11,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:20:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:20:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 20:20:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 20:20:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:20:11,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310226550] [2020-08-21 20:20:11,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:11,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:20:11,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396293016] [2020-08-21 20:20:11,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:20:11,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:11,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:20:11,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:20:11,435 INFO L87 Difference]: Start difference. First operand 1239 states and 1508 transitions. Second operand 9 states. [2020-08-21 20:20:12,537 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:12,801 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:20:13,059 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:13,291 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:14,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:14,395 INFO L93 Difference]: Finished difference Result 2857 states and 3834 transitions. [2020-08-21 20:20:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:20:14,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 20:20:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:14,409 INFO L225 Difference]: With dead ends: 2857 [2020-08-21 20:20:14,409 INFO L226 Difference]: Without dead ends: 1642 [2020-08-21 20:20:14,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:20:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-08-21 20:20:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1279. [2020-08-21 20:20:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-21 20:20:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1548 transitions. [2020-08-21 20:20:14,666 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1548 transitions. Word has length 93 [2020-08-21 20:20:14,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:14,666 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1548 transitions. [2020-08-21 20:20:14,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:20:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1548 transitions. [2020-08-21 20:20:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 20:20:14,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:14,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:14,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:20:14,674 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:14,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1516903585, now seen corresponding path program 1 times [2020-08-21 20:20:14,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:14,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162056691] [2020-08-21 20:20:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:14,935 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:14,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:14,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:14,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:14,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 20:20:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:20:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:15,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:15,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 20:20:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:15,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 20:20:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:20:15,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162056691] [2020-08-21 20:20:15,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:20:15,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 20:20:15,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751862923] [2020-08-21 20:20:15,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 20:20:15,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:15,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 20:20:15,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:20:15,084 INFO L87 Difference]: Start difference. First operand 1279 states and 1548 transitions. Second operand 11 states. [2020-08-21 20:20:15,685 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:15,926 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:16,147 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:16,788 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:17,039 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:17,267 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:20:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:18,400 INFO L93 Difference]: Finished difference Result 2491 states and 3236 transitions. [2020-08-21 20:20:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 20:20:18,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 20:20:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:18,408 INFO L225 Difference]: With dead ends: 2491 [2020-08-21 20:20:18,408 INFO L226 Difference]: Without dead ends: 1236 [2020-08-21 20:20:18,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:20:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-08-21 20:20:18,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1005. [2020-08-21 20:20:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-08-21 20:20:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1188 transitions. [2020-08-21 20:20:18,608 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1188 transitions. Word has length 93 [2020-08-21 20:20:18,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:18,608 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1188 transitions. [2020-08-21 20:20:18,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 20:20:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1188 transitions. [2020-08-21 20:20:18,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 20:20:18,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:18,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:18,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:20:18,612 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:18,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:18,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1451570632, now seen corresponding path program 1 times [2020-08-21 20:20:18,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:18,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019057631] [2020-08-21 20:20:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:18,937 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:18,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:18,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:18,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:20:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 20:20:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:20:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 20:20:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 20:20:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 20:20:19,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019057631] [2020-08-21 20:20:19,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:20:19,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 20:20:19,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031595778] [2020-08-21 20:20:19,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 20:20:19,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:19,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 20:20:19,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 20:20:19,160 INFO L87 Difference]: Start difference. First operand 1005 states and 1188 transitions. Second operand 17 states. [2020-08-21 20:20:19,795 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:20,074 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:20,331 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:20,563 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:20:21,149 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:21,702 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:22,095 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:23,088 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:23,350 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:23,710 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:23,958 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:20:24,474 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 20:20:25,009 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 20:20:26,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:26,266 INFO L93 Difference]: Finished difference Result 2201 states and 2748 transitions. [2020-08-21 20:20:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 20:20:26,266 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-21 20:20:26,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:26,275 INFO L225 Difference]: With dead ends: 2201 [2020-08-21 20:20:26,275 INFO L226 Difference]: Without dead ends: 1220 [2020-08-21 20:20:26,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-21 20:20:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-21 20:20:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 983. [2020-08-21 20:20:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-08-21 20:20:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1139 transitions. [2020-08-21 20:20:26,444 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1139 transitions. Word has length 97 [2020-08-21 20:20:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:26,445 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1139 transitions. [2020-08-21 20:20:26,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 20:20:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1139 transitions. [2020-08-21 20:20:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 20:20:26,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:26,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:26,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:20:26,450 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:26,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:26,450 INFO L82 PathProgramCache]: Analyzing trace with hash -914965907, now seen corresponding path program 1 times [2020-08-21 20:20:26,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:26,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103118606] [2020-08-21 20:20:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,748 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:20:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:20:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:20:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:20:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:20:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 20:20:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:20:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:20:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:20:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:20:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:20:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 20:20:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 20:20:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 20:20:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:20:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 20:20:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:26,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 20:20:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:20:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 20:20:27,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103118606] [2020-08-21 20:20:27,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:20:27,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 20:20:27,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311263084] [2020-08-21 20:20:27,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:20:27,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:20:27,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:20:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:20:27,026 INFO L87 Difference]: Start difference. First operand 983 states and 1139 transitions. Second operand 9 states. [2020-08-21 20:20:28,060 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:29,594 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:20:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:20:30,349 INFO L93 Difference]: Finished difference Result 2643 states and 3463 transitions. [2020-08-21 20:20:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 20:20:30,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-21 20:20:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:20:30,361 INFO L225 Difference]: With dead ends: 2643 [2020-08-21 20:20:30,361 INFO L226 Difference]: Without dead ends: 1980 [2020-08-21 20:20:30,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-08-21 20:20:30,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-21 20:20:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1593. [2020-08-21 20:20:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-08-21 20:20:30,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1869 transitions. [2020-08-21 20:20:30,655 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1869 transitions. Word has length 132 [2020-08-21 20:20:30,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:20:30,655 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 1869 transitions. [2020-08-21 20:20:30,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:20:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1869 transitions. [2020-08-21 20:20:30,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 20:20:30,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:20:30,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:20:30,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 20:20:30,661 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:20:30,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:20:30,662 INFO L82 PathProgramCache]: Analyzing trace with hash -405492817, now seen corresponding path program 1 times [2020-08-21 20:20:30,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:20:30,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088950347] [2020-08-21 20:20:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:20:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 20:20:30,718 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 20:20:30,719 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:20:30,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 20:20:30,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:20:30 BoogieIcfgContainer [2020-08-21 20:20:30,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:20:30,755 INFO L168 Benchmark]: Toolchain (without parser) took 43249.18 ms. Allocated memory was 139.5 MB in the beginning and 743.4 MB in the end (delta: 604.0 MB). Free memory was 101.3 MB in the beginning and 280.9 MB in the end (delta: -179.6 MB). Peak memory consumption was 424.4 MB. Max. memory is 7.1 GB. [2020-08-21 20:20:30,756 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 20:20:30,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.46 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 171.7 MB in the end (delta: -70.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-21 20:20:30,757 INFO L168 Benchmark]: Boogie Preprocessor took 106.63 ms. Allocated memory is still 203.4 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:20:30,758 INFO L168 Benchmark]: RCFGBuilder took 1114.73 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 167.6 MB in the beginning and 198.5 MB in the end (delta: -30.9 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:20:30,759 INFO L168 Benchmark]: TraceAbstraction took 41387.70 ms. Allocated memory was 236.5 MB in the beginning and 743.4 MB in the end (delta: 507.0 MB). Free memory was 198.5 MB in the beginning and 280.9 MB in the end (delta: -82.4 MB). Peak memory consumption was 424.6 MB. Max. memory is 7.1 GB. [2020-08-21 20:20:30,762 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 635.46 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 171.7 MB in the end (delta: -70.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.63 ms. Allocated memory is still 203.4 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1114.73 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 167.6 MB in the beginning and 198.5 MB in the end (delta: -30.9 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41387.70 ms. Allocated memory was 236.5 MB in the beginning and 743.4 MB in the end (delta: 507.0 MB). Free memory was 198.5 MB in the beginning and 280.9 MB in the end (delta: -82.4 MB). Peak memory consumption was 424.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 405]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L512] int retValue_acc ; [L513] int tmp ; [L517] FCALL select_helpers() [L518] FCALL select_features() [L519] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L519] RET, EXPR valid_product() [L519] tmp = valid_product() [L521] COND TRUE \read(tmp) [L523] FCALL setup() [L524] CALL runTest() [L503] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp___0)) [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L299] int retValue_acc ; [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L305] RET, EXPR isHighWaterSensorDry() [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] tmp___0 = 1 [L312] retValue_acc = tmp___0 [L313] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L218] int tmp ; [L222] CALL, EXPR isMethaneAlarm() [L243] int retValue_acc ; [L247] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L247] RET, EXPR isMethaneLevelCritical() [L247] retValue_acc = isMethaneLevelCritical() [L249] return (retValue_acc); [L222] RET, EXPR isMethaneAlarm() [L222] tmp = isMethaneAlarm() [L224] COND FALSE !(\read(tmp)) [L228] CALL activatePump__wrappee__highWaterSensor() [L212] pumpRunning = 1 [L228] RET activatePump__wrappee__highWaterSensor() [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND FALSE !(\read(tmp)) [L170] RET __utac_acc__Specification1_spec__1() [L389] RET timeShift() [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND FALSE !(\read(tmp)) [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND TRUE \read(tmp) [L420] CALL, EXPR isPumpRunning() [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] return (retValue_acc); [L420] RET, EXPR isPumpRunning() [L420] tmp___0 = isPumpRunning() [L422] COND TRUE \read(tmp___0) [L424] CALL __automaton_fail() [L405] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.3s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 2978 SDslu, 1540 SDs, 0 SdLazy, 8012 SolverSat, 2015 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1593occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 2008 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 247082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 37/42 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...