/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:20:38,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:20:38,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:20:38,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:20:38,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:20:38,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:20:38,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:20:38,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:20:38,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:20:38,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:20:38,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:20:38,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:20:38,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:20:38,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:20:38,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:20:38,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:20:38,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:20:38,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:20:38,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:20:38,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:20:38,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:20:38,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:20:38,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:20:38,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:20:38,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:20:38,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:20:38,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:20:38,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:20:38,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:20:38,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:20:38,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:20:38,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:20:38,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:20:38,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:20:38,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:20:38,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:20:38,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:20:38,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:20:38,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:20:38,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:20:38,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:20:39,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:20:39,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:20:39,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:20:39,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:20:39,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:20:39,042 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:20:39,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:20:39,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:20:39,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:20:39,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:20:39,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:20:39,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:20:39,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:20:39,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:20:39,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:20:39,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:20:39,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:20:39,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:20:39,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:20:39,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:20:39,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:20:39,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:20:39,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:20:39,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:20:39,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:20:39,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:20:39,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:20:39,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:20:39,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:20:39,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:20:39,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:20:39,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:20:39,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:20:39,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:20:39,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:20:39,396 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:20:39,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-18 23:20:39,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d9c761b1/f4bae65e08e24d26baaf5aa7cce06cd4/FLAG146947351 [2020-08-18 23:20:39,933 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:20:39,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product55.cil.c [2020-08-18 23:20:39,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d9c761b1/f4bae65e08e24d26baaf5aa7cce06cd4/FLAG146947351 [2020-08-18 23:20:40,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d9c761b1/f4bae65e08e24d26baaf5aa7cce06cd4 [2020-08-18 23:20:40,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:20:40,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:20:40,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:20:40,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:20:40,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:20:40,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:20:40" (1/1) ... [2020-08-18 23:20:40,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5395a65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40, skipping insertion in model container [2020-08-18 23:20:40,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:20:40" (1/1) ... [2020-08-18 23:20:40,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:20:40,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:20:40,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:20:40,826 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:20:40,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:20:40,984 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:20:40,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40 WrapperNode [2020-08-18 23:20:40,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:20:40,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:20:40,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:20:40,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:20:40,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40" (1/1) ... [2020-08-18 23:20:41,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40" (1/1) ... [2020-08-18 23:20:41,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40" (1/1) ... [2020-08-18 23:20:41,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40" (1/1) ... [2020-08-18 23:20:41,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40" (1/1) ... [2020-08-18 23:20:41,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40" (1/1) ... [2020-08-18 23:20:41,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40" (1/1) ... [2020-08-18 23:20:41,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:20:41,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:20:41,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:20:41,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:20:41,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:20:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:20:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:20:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:20:41,181 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:20:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:20:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:20:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:20:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:20:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:20:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:20:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:20:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:20:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:20:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:20:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 23:20:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:20:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:20:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:20:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:20:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 23:20:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:20:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:20:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:20:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:20:41,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:20:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:20:41,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:20:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 23:20:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 23:20:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:20:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:20:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:20:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:20:41,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:20:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:20:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 23:20:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 23:20:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:20:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:20:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:20:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:20:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:20:41,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:20:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:20:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:20:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:20:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:20:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:20:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:20:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:20:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:20:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:20:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:20:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:20:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:20:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:20:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:20:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 23:20:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:20:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 23:20:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:20:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:20:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:20:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:20:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:20:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:20:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:20:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 23:20:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:20:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:20:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:20:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:20:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 23:20:41,196 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 23:20:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:20:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:20:41,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:20:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:20:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:20:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:20:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:20:41,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:20:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:20:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:20:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:20:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:20:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:20:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:20:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:20:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 23:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:20:41,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:20:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:20:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:20:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:20:42,284 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:20:42,285 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:20:42,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:20:42 BoogieIcfgContainer [2020-08-18 23:20:42,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:20:42,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:20:42,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:20:42,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:20:42,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:20:40" (1/3) ... [2020-08-18 23:20:42,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3284d0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:20:42, skipping insertion in model container [2020-08-18 23:20:42,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:20:40" (2/3) ... [2020-08-18 23:20:42,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3284d0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:20:42, skipping insertion in model container [2020-08-18 23:20:42,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:20:42" (3/3) ... [2020-08-18 23:20:42,298 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2020-08-18 23:20:42,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:20:42,317 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:20:42,331 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:20:42,359 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:20:42,360 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:20:42,360 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:20:42,360 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:20:42,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:20:42,361 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:20:42,361 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:20:42,361 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:20:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-18 23:20:42,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 23:20:42,395 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:42,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:42,397 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:42,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1134611440, now seen corresponding path program 1 times [2020-08-18 23:20:42,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:42,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62949859] [2020-08-18 23:20:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,043 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:20:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:20:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:43,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62949859] [2020-08-18 23:20:43,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:43,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:20:43,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473993870] [2020-08-18 23:20:43,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:20:43,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:43,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:20:43,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:20:43,175 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 4 states. [2020-08-18 23:20:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:44,395 INFO L93 Difference]: Finished difference Result 343 states and 449 transitions. [2020-08-18 23:20:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:20:44,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 23:20:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:44,413 INFO L225 Difference]: With dead ends: 343 [2020-08-18 23:20:44,413 INFO L226 Difference]: Without dead ends: 190 [2020-08-18 23:20:44,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:20:44,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-18 23:20:44,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-08-18 23:20:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 23:20:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2020-08-18 23:20:44,522 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 51 [2020-08-18 23:20:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:44,525 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2020-08-18 23:20:44,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:20:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2020-08-18 23:20:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:20:44,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:44,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:44,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:20:44,533 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:44,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:44,537 INFO L82 PathProgramCache]: Analyzing trace with hash -179918531, now seen corresponding path program 1 times [2020-08-18 23:20:44,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:44,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827396618] [2020-08-18 23:20:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,957 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:44,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:45,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:20:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:45,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:20:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:45,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827396618] [2020-08-18 23:20:45,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:45,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:20:45,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202432248] [2020-08-18 23:20:45,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:20:45,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:45,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:20:45,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:20:45,019 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 5 states. [2020-08-18 23:20:45,521 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:46,639 INFO L93 Difference]: Finished difference Result 282 states and 352 transitions. [2020-08-18 23:20:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 23:20:46,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 23:20:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:46,643 INFO L225 Difference]: With dead ends: 282 [2020-08-18 23:20:46,643 INFO L226 Difference]: Without dead ends: 180 [2020-08-18 23:20:46,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:20:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-18 23:20:46,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 145. [2020-08-18 23:20:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-18 23:20:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-08-18 23:20:46,690 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 52 [2020-08-18 23:20:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:46,691 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-08-18 23:20:46,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:20:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-08-18 23:20:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 23:20:46,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:46,693 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] [2020-08-18 23:20:46,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:20:46,694 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:46,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:46,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1227863388, now seen corresponding path program 1 times [2020-08-18 23:20:46,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:46,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187109701] [2020-08-18 23:20:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:47,041 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:47,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:47,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:47,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:47,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:47,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:20:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:20:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:47,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187109701] [2020-08-18 23:20:47,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:47,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:20:47,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484022300] [2020-08-18 23:20:47,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:20:47,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:47,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:20:47,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:20:47,186 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 9 states. [2020-08-18 23:20:47,568 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:47,884 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:48,157 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:48,388 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:49,178 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:20:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:51,466 INFO L93 Difference]: Finished difference Result 487 states and 618 transitions. [2020-08-18 23:20:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:20:51,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 23:20:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:51,473 INFO L225 Difference]: With dead ends: 487 [2020-08-18 23:20:51,473 INFO L226 Difference]: Without dead ends: 370 [2020-08-18 23:20:51,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:20:51,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-08-18 23:20:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 305. [2020-08-18 23:20:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-18 23:20:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2020-08-18 23:20:51,561 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 56 [2020-08-18 23:20:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:51,561 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2020-08-18 23:20:51,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:20:51,561 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2020-08-18 23:20:51,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 23:20:51,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:51,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:51,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:20:51,565 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:51,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1601957820, now seen corresponding path program 1 times [2020-08-18 23:20:51,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:51,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345059824] [2020-08-18 23:20:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:51,958 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:20:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:20:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 23:20:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:52,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345059824] [2020-08-18 23:20:52,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:52,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:20:52,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74326136] [2020-08-18 23:20:52,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:20:52,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:52,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:20:52,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:20:52,085 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand 9 states. [2020-08-18 23:20:52,491 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:53,474 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:53,995 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:54,313 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:54,593 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:20:56,380 INFO L93 Difference]: Finished difference Result 973 states and 1285 transitions. [2020-08-18 23:20:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 23:20:56,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 23:20:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:20:56,389 INFO L225 Difference]: With dead ends: 973 [2020-08-18 23:20:56,389 INFO L226 Difference]: Without dead ends: 696 [2020-08-18 23:20:56,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 23:20:56,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-08-18 23:20:56,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 558. [2020-08-18 23:20:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-08-18 23:20:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 688 transitions. [2020-08-18 23:20:56,536 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 688 transitions. Word has length 62 [2020-08-18 23:20:56,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:20:56,536 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 688 transitions. [2020-08-18 23:20:56,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:20:56,537 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 688 transitions. [2020-08-18 23:20:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 23:20:56,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:20:56,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:20:56,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:20:56,540 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:20:56,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:20:56,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1204720808, now seen corresponding path program 1 times [2020-08-18 23:20:56,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:20:56,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216675368] [2020-08-18 23:20:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:20:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,838 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:20:56,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:20:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:20:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:20:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:20:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:20:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:20:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:20:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:20:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 23:20:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 23:20:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:20:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:20:57,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216675368] [2020-08-18 23:20:57,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:20:57,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:20:57,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542454017] [2020-08-18 23:20:57,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:20:57,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:20:57,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:20:57,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:20:57,011 INFO L87 Difference]: Start difference. First operand 558 states and 688 transitions. Second operand 10 states. [2020-08-18 23:20:57,539 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:20:58,564 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:58,850 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:59,131 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:20:59,853 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:21:01,560 INFO L93 Difference]: Finished difference Result 1531 states and 2090 transitions. [2020-08-18 23:21:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 23:21:01,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 23:21:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:21:01,571 INFO L225 Difference]: With dead ends: 1531 [2020-08-18 23:21:01,571 INFO L226 Difference]: Without dead ends: 1001 [2020-08-18 23:21:01,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 23:21:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-08-18 23:21:01,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 805. [2020-08-18 23:21:01,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-08-18 23:21:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2020-08-18 23:21:01,794 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 66 [2020-08-18 23:21:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:21:01,796 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2020-08-18 23:21:01,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:21:01,796 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2020-08-18 23:21:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 23:21:01,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:01,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:21:01,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:21:01,800 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:01,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:01,800 INFO L82 PathProgramCache]: Analyzing trace with hash -763723638, now seen corresponding path program 1 times [2020-08-18 23:21:01,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:01,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414482757] [2020-08-18 23:21:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,082 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:21:02,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:21:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:21:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:21:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:21:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:21:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:21:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:21:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:21:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 23:21:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 23:21:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:21:02,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414482757] [2020-08-18 23:21:02,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:21:02,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:21:02,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592993161] [2020-08-18 23:21:02,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:21:02,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:21:02,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:21:02,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:21:02,242 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand 10 states. [2020-08-18 23:21:03,521 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:21:03,803 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:21:04,071 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:04,333 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:21:05,725 INFO L93 Difference]: Finished difference Result 1854 states and 2470 transitions. [2020-08-18 23:21:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:21:05,726 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 23:21:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:21:05,734 INFO L225 Difference]: With dead ends: 1854 [2020-08-18 23:21:05,734 INFO L226 Difference]: Without dead ends: 1077 [2020-08-18 23:21:05,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:21:05,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2020-08-18 23:21:05,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 831. [2020-08-18 23:21:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-08-18 23:21:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1011 transitions. [2020-08-18 23:21:05,899 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1011 transitions. Word has length 93 [2020-08-18 23:21:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:21:05,900 INFO L479 AbstractCegarLoop]: Abstraction has 831 states and 1011 transitions. [2020-08-18 23:21:05,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:21:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1011 transitions. [2020-08-18 23:21:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 23:21:05,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:05,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:21:05,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:21:05,904 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:05,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:05,904 INFO L82 PathProgramCache]: Analyzing trace with hash -836110196, now seen corresponding path program 1 times [2020-08-18 23:21:05,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:05,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343047587] [2020-08-18 23:21:05,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,204 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:21:06,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:21:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:21:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:21:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:21:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:21:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:21:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:21:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:21:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 23:21:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 23:21:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:21:06,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343047587] [2020-08-18 23:21:06,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:21:06,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:21:06,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293152631] [2020-08-18 23:21:06,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:21:06,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:21:06,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:21:06,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:21:06,418 INFO L87 Difference]: Start difference. First operand 831 states and 1011 transitions. Second operand 12 states. [2020-08-18 23:21:07,019 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:21:07,271 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:07,511 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:08,447 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:08,716 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:08,983 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:21:10,638 INFO L93 Difference]: Finished difference Result 1908 states and 2587 transitions. [2020-08-18 23:21:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:21:10,641 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-18 23:21:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:21:10,651 INFO L225 Difference]: With dead ends: 1908 [2020-08-18 23:21:10,651 INFO L226 Difference]: Without dead ends: 1105 [2020-08-18 23:21:10,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:21:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-08-18 23:21:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 847. [2020-08-18 23:21:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-18 23:21:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-18 23:21:10,824 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 93 [2020-08-18 23:21:10,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:21:10,824 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-18 23:21:10,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:21:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-18 23:21:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 23:21:10,826 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:10,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:21:10,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:21:10,827 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:10,827 INFO L82 PathProgramCache]: Analyzing trace with hash -506344435, now seen corresponding path program 1 times [2020-08-18 23:21:10,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:10,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644792408] [2020-08-18 23:21:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,091 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:21:11,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:21:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:21:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:21:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:21:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:21:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:21:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:21:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:21:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 23:21:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 23:21:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:21:11,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644792408] [2020-08-18 23:21:11,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:21:11,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:21:11,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882764821] [2020-08-18 23:21:11,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:21:11,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:21:11,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:21:11,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:21:11,276 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 8 states. [2020-08-18 23:21:11,629 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:12,156 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:21:15,213 INFO L93 Difference]: Finished difference Result 2850 states and 3893 transitions. [2020-08-18 23:21:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 23:21:15,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 23:21:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:21:15,227 INFO L225 Difference]: With dead ends: 2850 [2020-08-18 23:21:15,227 INFO L226 Difference]: Without dead ends: 2031 [2020-08-18 23:21:15,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 23:21:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-08-18 23:21:15,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1687. [2020-08-18 23:21:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-18 23:21:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2069 transitions. [2020-08-18 23:21:15,527 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2069 transitions. Word has length 93 [2020-08-18 23:21:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:21:15,528 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2069 transitions. [2020-08-18 23:21:15,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:21:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2069 transitions. [2020-08-18 23:21:15,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 23:21:15,534 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:15,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:21:15,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:21:15,535 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:15,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:15,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1600364013, now seen corresponding path program 1 times [2020-08-18 23:21:15,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:15,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408562537] [2020-08-18 23:21:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,875 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:21:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:21:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:21:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:21:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:21:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:21:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:21:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:21:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:21:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:21:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 23:21:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 23:21:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:21:15,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408562537] [2020-08-18 23:21:15,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:21:15,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:21:15,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842487240] [2020-08-18 23:21:15,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:21:15,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:21:15,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:21:15,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:21:15,992 INFO L87 Difference]: Start difference. First operand 1687 states and 2069 transitions. Second operand 8 states. [2020-08-18 23:21:16,567 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:21:19,764 INFO L93 Difference]: Finished difference Result 3406 states and 4667 transitions. [2020-08-18 23:21:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 23:21:19,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-18 23:21:19,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:21:19,788 INFO L225 Difference]: With dead ends: 3406 [2020-08-18 23:21:19,788 INFO L226 Difference]: Without dead ends: 3403 [2020-08-18 23:21:19,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 23:21:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-08-18 23:21:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 2826. [2020-08-18 23:21:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2826 states. [2020-08-18 23:21:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3547 transitions. [2020-08-18 23:21:20,398 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 3547 transitions. Word has length 97 [2020-08-18 23:21:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:21:20,400 INFO L479 AbstractCegarLoop]: Abstraction has 2826 states and 3547 transitions. [2020-08-18 23:21:20,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:21:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 3547 transitions. [2020-08-18 23:21:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 23:21:20,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:20,416 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 23:21:20,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:21:20,417 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:20,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1055495760, now seen corresponding path program 1 times [2020-08-18 23:21:20,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:20,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566137179] [2020-08-18 23:21:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,759 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:21:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:21:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:21:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:21:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:21:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:21:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:21:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:21:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:21:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:21:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:21:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:21:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 23:21:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 23:21:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 23:21:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 23:21:20,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566137179] [2020-08-18 23:21:20,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:21:20,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 23:21:20,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046834656] [2020-08-18 23:21:20,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:21:20,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:21:20,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:21:20,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:21:20,990 INFO L87 Difference]: Start difference. First operand 2826 states and 3547 transitions. Second operand 13 states. [2020-08-18 23:21:21,928 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:21:22,353 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:22,584 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:21:24,145 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:21:25,804 INFO L93 Difference]: Finished difference Result 5316 states and 6984 transitions. [2020-08-18 23:21:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 23:21:25,805 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2020-08-18 23:21:25,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:21:25,824 INFO L225 Difference]: With dead ends: 5316 [2020-08-18 23:21:25,824 INFO L226 Difference]: Without dead ends: 2866 [2020-08-18 23:21:25,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 23:21:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2020-08-18 23:21:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2558. [2020-08-18 23:21:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2558 states. [2020-08-18 23:21:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3019 transitions. [2020-08-18 23:21:26,480 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3019 transitions. Word has length 160 [2020-08-18 23:21:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:21:26,481 INFO L479 AbstractCegarLoop]: Abstraction has 2558 states and 3019 transitions. [2020-08-18 23:21:26,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:21:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3019 transitions. [2020-08-18 23:21:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-18 23:21:26,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:26,491 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 23:21:26,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:21:26,492 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:26,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:26,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2128517555, now seen corresponding path program 1 times [2020-08-18 23:21:26,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:26,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034597276] [2020-08-18 23:21:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,800 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:21:26,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:21:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:21:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:21:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:21:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:21:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:21:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:21:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:21:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:21:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:21:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:21:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 23:21:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 23:21:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-18 23:21:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-18 23:21:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-18 23:21:27,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034597276] [2020-08-18 23:21:27,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:21:27,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 23:21:27,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431253964] [2020-08-18 23:21:27,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:21:27,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:21:27,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:21:27,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:21:27,007 INFO L87 Difference]: Start difference. First operand 2558 states and 3019 transitions. Second operand 10 states. [2020-08-18 23:21:28,134 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:30,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:21:30,224 INFO L93 Difference]: Finished difference Result 3168 states and 3876 transitions. [2020-08-18 23:21:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 23:21:30,224 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-08-18 23:21:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:21:30,233 INFO L225 Difference]: With dead ends: 3168 [2020-08-18 23:21:30,233 INFO L226 Difference]: Without dead ends: 1113 [2020-08-18 23:21:30,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 23:21:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-08-18 23:21:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 990. [2020-08-18 23:21:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-08-18 23:21:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1150 transitions. [2020-08-18 23:21:30,528 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1150 transitions. Word has length 170 [2020-08-18 23:21:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:21:30,529 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1150 transitions. [2020-08-18 23:21:30,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:21:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1150 transitions. [2020-08-18 23:21:30,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-18 23:21:30,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:21:30,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:21:30,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:21:30,534 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:21:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:21:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1897710765, now seen corresponding path program 1 times [2020-08-18 23:21:30,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:21:30,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566052073] [2020-08-18 23:21:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:21:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:30,891 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:21:30,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:21:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:21:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:21:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:21:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:30,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:21:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:30,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:21:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:21:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:30,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:21:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:30,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:21:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:21:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:21:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:21:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 23:21:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 23:21:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:21:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:21:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:21:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:21:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 23:21:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 23:21:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:21:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-18 23:21:31,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566052073] [2020-08-18 23:21:31,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:21:31,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 23:21:31,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755952454] [2020-08-18 23:21:31,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 23:21:31,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:21:31,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 23:21:31,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:21:31,233 INFO L87 Difference]: Start difference. First operand 990 states and 1150 transitions. Second operand 19 states. [2020-08-18 23:21:32,070 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:21:32,410 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 23:21:32,669 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:21:32,908 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 23:21:33,562 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189