/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:02:39,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:02:39,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:02:39,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:02:39,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:02:39,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:02:39,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:02:39,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:02:39,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:02:39,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:02:39,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:02:39,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:02:39,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:02:39,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:02:39,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:02:39,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:02:39,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:02:39,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:02:39,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:02:39,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:02:39,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:02:39,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:02:39,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:02:39,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:02:39,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:02:39,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:02:39,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:02:39,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:02:39,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:02:39,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:02:39,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:02:39,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:02:39,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:02:39,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:02:39,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:02:39,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:02:39,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:02:39,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:02:39,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:02:39,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:02:39,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:02:39,133 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 22:02:39,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:02:39,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:02:39,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:02:39,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:02:39,157 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:02:39,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:02:39,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:02:39,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:02:39,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:02:39,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:02:39,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:02:39,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:02:39,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:02:39,159 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:02:39,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:02:39,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:02:39,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:02:39,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:02:39,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:02:39,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:02:39,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:02:39,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:02:39,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:02:39,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:02:39,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:02:39,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:02:39,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:02:39,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:02:39,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:02:39,162 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:02:39,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:02:39,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:02:39,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:02:39,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:02:39,495 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:02:39,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-21 22:02:39,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f997579d/c73884ccae8e4774b6997e6c075e637f/FLAG880578628 [2020-08-21 22:02:40,112 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:02:40,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-21 22:02:40,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f997579d/c73884ccae8e4774b6997e6c075e637f/FLAG880578628 [2020-08-21 22:02:40,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f997579d/c73884ccae8e4774b6997e6c075e637f [2020-08-21 22:02:40,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:02:40,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:02:40,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:02:40,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:02:40,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:02:40,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:02:40" (1/1) ... [2020-08-21 22:02:40,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2daa1dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:40, skipping insertion in model container [2020-08-21 22:02:40,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:02:40" (1/1) ... [2020-08-21 22:02:40,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:02:40,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:02:40,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:02:40,770 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:02:40,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:02:41,021 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:02:41,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41 WrapperNode [2020-08-21 22:02:41,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:02:41,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:02:41,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:02:41,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:02:41,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41" (1/1) ... [2020-08-21 22:02:41,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41" (1/1) ... [2020-08-21 22:02:41,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41" (1/1) ... [2020-08-21 22:02:41,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41" (1/1) ... [2020-08-21 22:02:41,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41" (1/1) ... [2020-08-21 22:02:41,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41" (1/1) ... [2020-08-21 22:02:41,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41" (1/1) ... [2020-08-21 22:02:41,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:02:41,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:02:41,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:02:41,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:02:41,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41" (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 22:02:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:02:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:02:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:02:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:02:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:02:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:02:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:02:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:02:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:02:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:02:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:02:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:02:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:02:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:02:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:02:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:02:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:02:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:02:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:02:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:02:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:02:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:02:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:02:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:02:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:02:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:02:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:02:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:02:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:02:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:02:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:02:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:02:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:02:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:02:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:02:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:02:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:02:41,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:02:41,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 22:02:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:02:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:02:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:02:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:02:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:02:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:02:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:02:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:02:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:02:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:02:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:02:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:02:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:02:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:02:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:02:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:02:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:02:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:02:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 22:02:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:02:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:02:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:02:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:02:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:02:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:02:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:02:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:02:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:02:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:02:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:02:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:02:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:02:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:02:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:02:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:02:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:02:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:02:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:02:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:02:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:02:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:02:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:02:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:02:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:02:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:02:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:02:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:02:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:02:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:02:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:02:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:02:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:02:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:02:42,366 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:02:42,367 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:02:42,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:02:42 BoogieIcfgContainer [2020-08-21 22:02:42,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:02:42,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:02:42,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:02:42,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:02:42,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:02:40" (1/3) ... [2020-08-21 22:02:42,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d63b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:02:42, skipping insertion in model container [2020-08-21 22:02:42,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:02:41" (2/3) ... [2020-08-21 22:02:42,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d63b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:02:42, skipping insertion in model container [2020-08-21 22:02:42,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:02:42" (3/3) ... [2020-08-21 22:02:42,381 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-08-21 22:02:42,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:02:42,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:02:42,415 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:02:42,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:02:42,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:02:42,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:02:42,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:02:42,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:02:42,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:02:42,444 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:02:42,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:02:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-08-21 22:02:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 22:02:42,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:02:42,480 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 22:02:42,480 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:02:42,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:02:42,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1806854140, now seen corresponding path program 1 times [2020-08-21 22:02:42,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:02:42,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556479496] [2020-08-21 22:02:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:02:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:43,149 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:02:43,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:02:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:02:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:02:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:02:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:02:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:43,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:02:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:02:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:43,257 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 22:02:43,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556479496] [2020-08-21 22:02:43,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:02:43,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:02:43,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020950772] [2020-08-21 22:02:43,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:02:43,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:02:43,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:02:43,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:02:43,291 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 3 states. [2020-08-21 22:02:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:02:44,467 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-08-21 22:02:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:02:44,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 22:02:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:02:44,485 INFO L225 Difference]: With dead ends: 278 [2020-08-21 22:02:44,485 INFO L226 Difference]: Without dead ends: 151 [2020-08-21 22:02:44,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:02:44,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-21 22:02:44,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-08-21 22:02:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 22:02:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-21 22:02:44,583 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-08-21 22:02:44,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:02:44,584 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-21 22:02:44,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:02:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-21 22:02:44,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 22:02:44,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:02:44,593 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 22:02:44,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:02:44,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:02:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:02:44,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1793827304, now seen corresponding path program 1 times [2020-08-21 22:02:44,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:02:44,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188922985] [2020-08-21 22:02:44,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:02:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:44,998 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:02:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:02:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:45,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:02:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:02:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:45,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:02:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:45,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:02:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:02:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:45,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:02:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:45,098 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 22:02:45,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188922985] [2020-08-21 22:02:45,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:02:45,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:02:45,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572176036] [2020-08-21 22:02:45,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:02:45,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:02:45,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:02:45,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:02:45,104 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-08-21 22:02:45,517 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:02:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:02:46,313 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-08-21 22:02:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:02:46,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 22:02:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:02:46,317 INFO L225 Difference]: With dead ends: 198 [2020-08-21 22:02:46,317 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 22:02:46,318 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 22:02:46,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 22:02:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-08-21 22:02:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-21 22:02:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-08-21 22:02:46,357 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-08-21 22:02:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:02:46,358 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-08-21 22:02:46,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:02:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-08-21 22:02:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:02:46,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:02:46,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:02:46,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:02:46,361 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:02:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:02:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash 25908157, now seen corresponding path program 1 times [2020-08-21 22:02:46,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:02:46,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3183041] [2020-08-21 22:02:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:02:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:46,702 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:02:46,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:02:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:02:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:46,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:02:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:02:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:02:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:02:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:46,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:02:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:46,772 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 22:02:46,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3183041] [2020-08-21 22:02:46,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:02:46,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:02:46,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602349855] [2020-08-21 22:02:46,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:02:46,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:02:46,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:02:46,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:02:46,775 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 8 states. [2020-08-21 22:02:47,167 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:02:47,463 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:02:47,704 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:02:47,962 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:02:48,704 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:02:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:02:50,199 INFO L93 Difference]: Finished difference Result 378 states and 466 transitions. [2020-08-21 22:02:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:02:50,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 22:02:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:02:50,204 INFO L225 Difference]: With dead ends: 378 [2020-08-21 22:02:50,204 INFO L226 Difference]: Without dead ends: 293 [2020-08-21 22:02:50,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:02:50,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-21 22:02:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 220. [2020-08-21 22:02:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 22:02:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2020-08-21 22:02:50,273 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 52 [2020-08-21 22:02:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:02:50,273 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2020-08-21 22:02:50,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:02:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2020-08-21 22:02:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 22:02:50,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:02:50,276 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 22:02:50,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:02:50,276 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:02:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:02:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash -388118307, now seen corresponding path program 1 times [2020-08-21 22:02:50,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:02:50,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162742353] [2020-08-21 22:02:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:02:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:50,586 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:02:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:02:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:50,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:02:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:02:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:02:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:02:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:50,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:02:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:50,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:02:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:02:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:50,707 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 22:02:50,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162742353] [2020-08-21 22:02:50,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:02:50,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:02:50,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047065676] [2020-08-21 22:02:50,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:02:50,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:02:50,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:02:50,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:02:50,710 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand 12 states. [2020-08-21 22:02:51,221 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:02:51,528 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:02:51,774 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:02:52,010 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:02:52,581 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:02:53,338 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:02:53,677 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:02:53,949 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:02:54,241 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:02:54,488 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:02:54,853 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:02:55,144 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:02:55,374 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:02:56,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:02:56,827 INFO L93 Difference]: Finished difference Result 881 states and 1222 transitions. [2020-08-21 22:02:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 22:02:56,828 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-21 22:02:56,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:02:56,835 INFO L225 Difference]: With dead ends: 881 [2020-08-21 22:02:56,835 INFO L226 Difference]: Without dead ends: 685 [2020-08-21 22:02:56,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 22:02:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-08-21 22:02:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 592. [2020-08-21 22:02:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 22:02:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 744 transitions. [2020-08-21 22:02:56,989 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 744 transitions. Word has length 57 [2020-08-21 22:02:56,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:02:56,989 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 744 transitions. [2020-08-21 22:02:56,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:02:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 744 transitions. [2020-08-21 22:02:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 22:02:56,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:02:56,994 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 22:02:56,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:02:56,994 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:02:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:02:56,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1713773635, now seen corresponding path program 1 times [2020-08-21 22:02:56,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:02:56,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838560592] [2020-08-21 22:02:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:02:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,251 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:02:57,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:02:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:02:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:02:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:02:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:02:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:02:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:02:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:02:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:02:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:57,317 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 22:02:57,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838560592] [2020-08-21 22:02:57,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:02:57,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:02:57,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545387216] [2020-08-21 22:02:57,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:02:57,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:02:57,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:02:57,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:02:57,320 INFO L87 Difference]: Start difference. First operand 592 states and 744 transitions. Second operand 6 states. [2020-08-21 22:02:57,650 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:02:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:02:59,305 INFO L93 Difference]: Finished difference Result 1481 states and 1983 transitions. [2020-08-21 22:02:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:02:59,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 22:02:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:02:59,318 INFO L225 Difference]: With dead ends: 1481 [2020-08-21 22:02:59,318 INFO L226 Difference]: Without dead ends: 913 [2020-08-21 22:02:59,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:02:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-21 22:02:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 846. [2020-08-21 22:02:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-08-21 22:02:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1064 transitions. [2020-08-21 22:02:59,513 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1064 transitions. Word has length 61 [2020-08-21 22:02:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:02:59,514 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1064 transitions. [2020-08-21 22:02:59,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:02:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1064 transitions. [2020-08-21 22:02:59,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 22:02:59,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:02:59,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:02:59,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:02:59,518 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:02:59,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:02:59,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1637256011, now seen corresponding path program 1 times [2020-08-21 22:02:59,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:02:59,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203463697] [2020-08-21 22:02:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:02:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,798 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:02:59,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:02:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:02:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:02:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:02:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:02:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:02:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:02:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 22:02:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:02:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:02:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 22:02:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 22:02:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 22:02:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:02:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:02:59,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203463697] [2020-08-21 22:02:59,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:02:59,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:02:59,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022484490] [2020-08-21 22:02:59,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:02:59,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:02:59,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:02:59,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:02:59,967 INFO L87 Difference]: Start difference. First operand 846 states and 1064 transitions. Second operand 10 states. [2020-08-21 22:03:00,549 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 22:03:01,132 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:02,897 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:04,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:04,326 INFO L93 Difference]: Finished difference Result 1633 states and 2139 transitions. [2020-08-21 22:03:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:03:04,327 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 22:03:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:04,336 INFO L225 Difference]: With dead ends: 1633 [2020-08-21 22:03:04,336 INFO L226 Difference]: Without dead ends: 1048 [2020-08-21 22:03:04,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-21 22:03:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-08-21 22:03:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 953. [2020-08-21 22:03:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-21 22:03:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1176 transitions. [2020-08-21 22:03:04,548 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1176 transitions. Word has length 89 [2020-08-21 22:03:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:04,549 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1176 transitions. [2020-08-21 22:03:04,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:03:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1176 transitions. [2020-08-21 22:03:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-21 22:03:04,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:04,552 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:04,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:03:04,553 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:04,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:04,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1243870907, now seen corresponding path program 1 times [2020-08-21 22:03:04,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:04,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101537519] [2020-08-21 22:03:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,821 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:03:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:04,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 22:03:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 22:03:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 22:03:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 22:03:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 22:03:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 22:03:05,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101537519] [2020-08-21 22:03:05,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:05,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 22:03:05,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759457352] [2020-08-21 22:03:05,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:03:05,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:05,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:03:05,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:03:05,045 INFO L87 Difference]: Start difference. First operand 953 states and 1176 transitions. Second operand 12 states. [2020-08-21 22:03:05,836 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:06,068 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:06,285 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:06,909 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:07,159 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:07,411 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:08,372 INFO L93 Difference]: Finished difference Result 1984 states and 2566 transitions. [2020-08-21 22:03:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:03:08,372 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-21 22:03:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:08,379 INFO L225 Difference]: With dead ends: 1984 [2020-08-21 22:03:08,379 INFO L226 Difference]: Without dead ends: 1055 [2020-08-21 22:03:08,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:03:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-21 22:03:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 953. [2020-08-21 22:03:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-21 22:03:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1172 transitions. [2020-08-21 22:03:08,598 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1172 transitions. Word has length 115 [2020-08-21 22:03:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:08,599 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1172 transitions. [2020-08-21 22:03:08,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:03:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1172 transitions. [2020-08-21 22:03:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-21 22:03:08,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:08,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:08,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:03:08,603 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash 289930749, now seen corresponding path program 1 times [2020-08-21 22:03:08,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:08,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96964161] [2020-08-21 22:03:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,897 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:03:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 22:03:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 22:03:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 22:03:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 22:03:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 22:03:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 22:03:09,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96964161] [2020-08-21 22:03:09,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:09,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:03:09,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735101691] [2020-08-21 22:03:09,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:03:09,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:09,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:03:09,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:03:09,055 INFO L87 Difference]: Start difference. First operand 953 states and 1172 transitions. Second operand 10 states. [2020-08-21 22:03:10,082 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:10,323 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:03:10,576 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:10,812 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:11,530 INFO L93 Difference]: Finished difference Result 1803 states and 2279 transitions. [2020-08-21 22:03:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:03:11,531 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-08-21 22:03:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:11,537 INFO L225 Difference]: With dead ends: 1803 [2020-08-21 22:03:11,537 INFO L226 Difference]: Without dead ends: 874 [2020-08-21 22:03:11,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 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 22:03:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-08-21 22:03:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 822. [2020-08-21 22:03:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-08-21 22:03:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 993 transitions. [2020-08-21 22:03:11,720 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 993 transitions. Word has length 115 [2020-08-21 22:03:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:11,738 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 993 transitions. [2020-08-21 22:03:11,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:03:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 993 transitions. [2020-08-21 22:03:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-21 22:03:11,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:11,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:11,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:03:11,740 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:11,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1415201690, now seen corresponding path program 1 times [2020-08-21 22:03:11,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:11,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722036241] [2020-08-21 22:03:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,044 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:12,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:03:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:03:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:03:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 22:03:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 22:03:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 22:03:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 22:03:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:03:12,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722036241] [2020-08-21 22:03:12,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:12,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 22:03:12,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041667818] [2020-08-21 22:03:12,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:03:12,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:12,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:03:12,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:03:12,185 INFO L87 Difference]: Start difference. First operand 822 states and 993 transitions. Second operand 12 states. [2020-08-21 22:03:12,834 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:13,682 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:13,963 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:14,212 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:14,438 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:14,670 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:15,023 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:15,587 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:15,843 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:16,105 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:17,601 INFO L93 Difference]: Finished difference Result 2004 states and 2576 transitions. [2020-08-21 22:03:17,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:03:17,602 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-21 22:03:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:17,610 INFO L225 Difference]: With dead ends: 2004 [2020-08-21 22:03:17,611 INFO L226 Difference]: Without dead ends: 1355 [2020-08-21 22:03:17,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-21 22:03:17,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-08-21 22:03:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1183. [2020-08-21 22:03:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-08-21 22:03:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1447 transitions. [2020-08-21 22:03:17,839 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1447 transitions. Word has length 115 [2020-08-21 22:03:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:17,841 INFO L479 AbstractCegarLoop]: Abstraction has 1183 states and 1447 transitions. [2020-08-21 22:03:17,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:03:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1447 transitions. [2020-08-21 22:03:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 22:03:17,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:17,850 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:17,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:03:17,851 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:17,851 INFO L82 PathProgramCache]: Analyzing trace with hash -182454868, now seen corresponding path program 1 times [2020-08-21 22:03:17,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:17,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037515298] [2020-08-21 22:03:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,207 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:03:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:03:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:03:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:03:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:03:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 22:03:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 22:03:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 22:03:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 22:03:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-21 22:03:18,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037515298] [2020-08-21 22:03:18,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:18,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 22:03:18,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682099680] [2020-08-21 22:03:18,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:03:18,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:18,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:03:18,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:03:18,485 INFO L87 Difference]: Start difference. First operand 1183 states and 1447 transitions. Second operand 13 states. [2020-08-21 22:03:19,128 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:19,364 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:19,587 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:20,061 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:21,003 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:22,506 INFO L93 Difference]: Finished difference Result 2158 states and 2710 transitions. [2020-08-21 22:03:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 22:03:22,507 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 148 [2020-08-21 22:03:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:22,515 INFO L225 Difference]: With dead ends: 2158 [2020-08-21 22:03:22,515 INFO L226 Difference]: Without dead ends: 1199 [2020-08-21 22:03:22,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:03:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-21 22:03:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 877. [2020-08-21 22:03:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-08-21 22:03:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1022 transitions. [2020-08-21 22:03:22,709 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1022 transitions. Word has length 148 [2020-08-21 22:03:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:22,710 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 1022 transitions. [2020-08-21 22:03:22,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:03:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1022 transitions. [2020-08-21 22:03:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-21 22:03:22,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:22,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:22,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:03:22,714 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:22,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:22,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1037640305, now seen corresponding path program 2 times [2020-08-21 22:03:22,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:22,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840678172] [2020-08-21 22:03:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,049 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:23,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:03:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:03:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 22:03:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:03:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 22:03:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 22:03:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 22:03:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 22:03:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 22:03:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 22:03:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-21 22:03:23,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840678172] [2020-08-21 22:03:23,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:23,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 22:03:23,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115821754] [2020-08-21 22:03:23,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 22:03:23,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:23,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 22:03:23,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:03:23,288 INFO L87 Difference]: Start difference. First operand 877 states and 1022 transitions. Second operand 14 states. [2020-08-21 22:03:23,811 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:24,414 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:24,940 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:25,248 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:25,493 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:25,745 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:26,047 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:26,298 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:27,580 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:27,828 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:28,752 INFO L93 Difference]: Finished difference Result 2124 states and 2708 transitions. [2020-08-21 22:03:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 22:03:28,753 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-21 22:03:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:28,761 INFO L225 Difference]: With dead ends: 2124 [2020-08-21 22:03:28,761 INFO L226 Difference]: Without dead ends: 1420 [2020-08-21 22:03:28,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 22:03:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-08-21 22:03:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 870. [2020-08-21 22:03:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-08-21 22:03:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1022 transitions. [2020-08-21 22:03:28,968 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1022 transitions. Word has length 155 [2020-08-21 22:03:28,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:28,969 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1022 transitions. [2020-08-21 22:03:28,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 22:03:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1022 transitions. [2020-08-21 22:03:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 22:03:28,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:28,972 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:03:28,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:03:28,972 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:28,973 INFO L82 PathProgramCache]: Analyzing trace with hash 59332245, now seen corresponding path program 3 times [2020-08-21 22:03:28,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:28,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868872583] [2020-08-21 22:03:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:03:29,072 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:03:29,072 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:03:29,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:03:29,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:03:29 BoogieIcfgContainer [2020-08-21 22:03:29,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:03:29,108 INFO L168 Benchmark]: Toolchain (without parser) took 48762.25 ms. Allocated memory was 146.3 MB in the beginning and 711.5 MB in the end (delta: 565.2 MB). Free memory was 101.1 MB in the beginning and 128.1 MB in the end (delta: -27.0 MB). Peak memory consumption was 538.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:29,109 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:03:29,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.14 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.9 MB in the beginning and 171.9 MB in the end (delta: -71.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:29,110 INFO L168 Benchmark]: Boogie Preprocessor took 96.97 ms. Allocated memory is still 203.4 MB. Free memory was 171.9 MB in the beginning and 167.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:29,111 INFO L168 Benchmark]: RCFGBuilder took 1251.96 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 199.8 MB in the end (delta: -32.2 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:29,111 INFO L168 Benchmark]: TraceAbstraction took 46733.06 ms. Allocated memory was 236.5 MB in the beginning and 711.5 MB in the end (delta: 475.0 MB). Free memory was 198.4 MB in the beginning and 128.1 MB in the end (delta: 70.2 MB). Peak memory consumption was 545.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:03:29,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 675.14 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.9 MB in the beginning and 171.9 MB in the end (delta: -71.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.97 ms. Allocated memory is still 203.4 MB. Free memory was 171.9 MB in the beginning and 167.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1251.96 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 199.8 MB in the end (delta: -32.2 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46733.06 ms. Allocated memory was 236.5 MB in the beginning and 711.5 MB in the end (delta: 475.0 MB). Free memory was 198.4 MB in the beginning and 128.1 MB in the end (delta: 70.2 MB). Peak memory consumption was 545.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 437]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L299] int cleanupTimeShifts = 4; [L611] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L809] int waterLevel = 1; [L810] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; [L380] FCALL select_helpers() [L381] FCALL select_features() [L382] CALL, EXPR valid_product() [L424] int retValue_acc ; [L427] retValue_acc = 1 [L428] return (retValue_acc); [L382] RET, EXPR valid_product() [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) [L386] FCALL setup() [L387] CALL runTest() [L366] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L827] COND TRUE waterLevel < 2 [L828] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L257] int retValue_acc ; [L258] int tmp ; [L259] int tmp___0 ; [L263] CALL, EXPR isHighWaterSensorDry() [L889] int retValue_acc ; [L892] COND FALSE !(waterLevel < 2) [L896] retValue_acc = 0 [L897] return (retValue_acc); [L263] RET, EXPR isHighWaterSensorDry() [L263] tmp = isHighWaterSensorDry() [L265] COND FALSE !(\read(tmp)) [L268] tmp___0 = 1 [L270] retValue_acc = tmp___0 [L271] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L188] pumpRunning = 1 [L169] RET activatePump() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND TRUE tmp == 0 [L913] CALL, EXPR isPumpRunning() [L212] int retValue_acc ; [L215] retValue_acc = pumpRunning [L216] return (retValue_acc); [L913] RET, EXPR isPumpRunning() [L913] tmp___0 = isPumpRunning() [L915] COND TRUE \read(tmp___0) [L917] CALL __automaton_fail() [L437] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.6s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 39.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1363 SDtfs, 3563 SDslu, 1919 SDs, 0 SdLazy, 9413 SolverSat, 2712 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 348 SyntacticMatches, 11 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 1585 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1151 NumberOfCodeBlocks, 1151 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 989 ConstructedInterpolants, 0 QuantifiedInterpolants, 375157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 224/262 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...