/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:40:41,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:40:41,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:40:41,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:40:41,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:40:41,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:40:41,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:40:41,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:40:41,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:40:41,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:40:41,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:40:41,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:40:41,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:40:41,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:40:41,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:40:41,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:40:41,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:40:41,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:40:41,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:40:41,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:40:41,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:40:41,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:40:41,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:40:41,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:40:41,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:40:41,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:40:41,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:40:41,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:40:41,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:40:41,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:40:41,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:40:41,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:40:41,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:40:41,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:40:41,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:40:41,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:40:41,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:40:41,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:40:41,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:40:41,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:40:41,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:40:41,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 23:40:41,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:40:41,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:40:42,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:40:42,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:40:42,000 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:40:42,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:40:42,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:40:42,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:40:42,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:40:42,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:40:42,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:40:42,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:40:42,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:40:42,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:40:42,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:40:42,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:40:42,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:40:42,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:40:42,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:40:42,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:40:42,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:40:42,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:40:42,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:40:42,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:40:42,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:40:42,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:40:42,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:40:42,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:40:42,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:40:42,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:40:42,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:40:42,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:40:42,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:40:42,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:40:42,306 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:40:42,307 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-21 23:40:42,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1b1383bc/29679627db594f509797d5c64e810cb6/FLAG2ad02a71a [2020-08-21 23:40:42,912 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:40:42,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-21 23:40:42,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1b1383bc/29679627db594f509797d5c64e810cb6/FLAG2ad02a71a [2020-08-21 23:40:43,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1b1383bc/29679627db594f509797d5c64e810cb6 [2020-08-21 23:40:43,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:40:43,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:40:43,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:40:43,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:40:43,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:40:43,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:40:43" (1/1) ... [2020-08-21 23:40:43,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c2f82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:43, skipping insertion in model container [2020-08-21 23:40:43,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:40:43" (1/1) ... [2020-08-21 23:40:43,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:40:43,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:40:43,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:40:43,930 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:40:44,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:40:44,102 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:40:44,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44 WrapperNode [2020-08-21 23:40:44,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:40:44,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:40:44,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:40:44,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:40:44,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44" (1/1) ... [2020-08-21 23:40:44,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44" (1/1) ... [2020-08-21 23:40:44,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44" (1/1) ... [2020-08-21 23:40:44,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44" (1/1) ... [2020-08-21 23:40:44,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44" (1/1) ... [2020-08-21 23:40:44,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44" (1/1) ... [2020-08-21 23:40:44,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44" (1/1) ... [2020-08-21 23:40:44,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:40:44,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:40:44,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:40:44,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:40:44,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:40:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:40:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:40:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:40:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:40:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:40:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:40:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:40:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:40:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 23:40:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:40:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 23:40:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:40:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:40:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:40:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:40:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:40:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:40:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 23:40:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 23:40:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 23:40:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:40:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:40:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:40:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:40:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:40:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:40:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:40:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:40:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:40:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:40:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:40:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:40:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:40:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:40:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:40:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:40:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:40:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:40:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:40:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:40:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:40:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:40:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 23:40:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:40:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:40:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:40:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:40:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:40:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:40:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 23:40:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:40:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:40:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:40:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:40:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:40:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:40:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:40:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 23:40:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:40:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:40:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:40:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:40:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 23:40:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:40:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:40:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:40:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:40:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 23:40:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 23:40:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:40:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 23:40:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:40:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:40:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:40:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:40:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:40:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:40:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:40:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:40:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:40:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:40:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:40:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:40:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:40:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:40:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:40:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:40:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:40:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:40:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:40:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:40:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:40:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:40:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:40:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:40:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:40:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:40:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:40:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:40:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:40:45,379 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:40:45,379 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:40:45,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:40:45 BoogieIcfgContainer [2020-08-21 23:40:45,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:40:45,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:40:45,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:40:45,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:40:45,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:40:43" (1/3) ... [2020-08-21 23:40:45,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758e3b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:40:45, skipping insertion in model container [2020-08-21 23:40:45,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:40:44" (2/3) ... [2020-08-21 23:40:45,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758e3b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:40:45, skipping insertion in model container [2020-08-21 23:40:45,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:40:45" (3/3) ... [2020-08-21 23:40:45,393 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2020-08-21 23:40:45,404 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:40:45,412 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:40:45,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:40:45,451 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:40:45,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:40:45,452 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:40:45,452 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:40:45,452 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:40:45,452 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:40:45,453 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:40:45,453 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:40:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-21 23:40:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 23:40:45,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:40:45,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:40:45,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:40:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:40:45,494 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2020-08-21 23:40:45,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:40:45,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180578832] [2020-08-21 23:40:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:40:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:46,185 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:40:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:40:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:46,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:40:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:46,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:40:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:46,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:40:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:46,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:40:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:46,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:40:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:40:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:40:46,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180578832] [2020-08-21 23:40:46,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:40:46,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:40:46,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308258640] [2020-08-21 23:40:46,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:40:46,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:40:46,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:40:46,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:40:46,358 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 3 states. [2020-08-21 23:40:47,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:40:47,833 INFO L93 Difference]: Finished difference Result 360 states and 465 transitions. [2020-08-21 23:40:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:40:47,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 23:40:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:40:47,851 INFO L225 Difference]: With dead ends: 360 [2020-08-21 23:40:47,851 INFO L226 Difference]: Without dead ends: 194 [2020-08-21 23:40:47,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:40:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-21 23:40:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2020-08-21 23:40:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-21 23:40:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2020-08-21 23:40:48,000 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2020-08-21 23:40:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:40:48,001 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2020-08-21 23:40:48,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:40:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2020-08-21 23:40:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 23:40:48,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:40:48,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:40:48,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:40:48,015 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:40:48,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:40:48,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2020-08-21 23:40:48,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:40:48,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703685461] [2020-08-21 23:40:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:40:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:48,397 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:40:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:40:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:40:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:48,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:40:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:48,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:40:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:40:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:48,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:40:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:40:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:40:48,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703685461] [2020-08-21 23:40:48,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:40:48,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:40:48,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608176343] [2020-08-21 23:40:48,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:40:48,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:40:48,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:40:48,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:40:48,444 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 4 states. [2020-08-21 23:40:48,910 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:40:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:40:49,974 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2020-08-21 23:40:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:40:49,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 23:40:49,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:40:49,979 INFO L225 Difference]: With dead ends: 289 [2020-08-21 23:40:49,980 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 23:40:49,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:40:49,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 23:40:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-21 23:40:50,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 23:40:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2020-08-21 23:40:50,027 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2020-08-21 23:40:50,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:40:50,027 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2020-08-21 23:40:50,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:40:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2020-08-21 23:40:50,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 23:40:50,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:40:50,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:40:50,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:40:50,030 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:40:50,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:40:50,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2020-08-21 23:40:50,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:40:50,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660245251] [2020-08-21 23:40:50,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:40:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:50,371 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:40:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:40:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:40:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:50,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:40:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:40:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:50,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:40:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:50,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:40:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:50,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:40:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:40:50,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660245251] [2020-08-21 23:40:50,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:40:50,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:40:50,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942783562] [2020-08-21 23:40:50,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:40:50,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:40:50,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:40:50,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:40:50,448 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 8 states. [2020-08-21 23:40:50,901 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:40:51,207 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:40:51,465 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:40:51,734 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:40:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:40:53,249 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2020-08-21 23:40:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:40:53,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 23:40:53,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:40:53,254 INFO L225 Difference]: With dead ends: 302 [2020-08-21 23:40:53,254 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 23:40:53,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:40:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 23:40:53,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-21 23:40:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 23:40:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-08-21 23:40:53,304 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2020-08-21 23:40:53,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:40:53,304 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-08-21 23:40:53,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:40:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-08-21 23:40:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 23:40:53,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:40:53,307 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] [2020-08-21 23:40:53,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:40:53,308 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:40:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:40:53,308 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2020-08-21 23:40:53,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:40:53,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352825856] [2020-08-21 23:40:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:40:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,604 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:40:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:40:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:40:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:40:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:40:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:40:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:40:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:40:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:40:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:40:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:40:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 23:40:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:40:53,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352825856] [2020-08-21 23:40:53,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:40:53,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:40:53,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215737939] [2020-08-21 23:40:53,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:40:53,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:40:53,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:40:53,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:40:53,730 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 6 states. [2020-08-21 23:40:54,105 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:40:55,382 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:40:56,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:40:56,130 INFO L93 Difference]: Finished difference Result 413 states and 506 transitions. [2020-08-21 23:40:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:40:56,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-21 23:40:56,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:40:56,142 INFO L225 Difference]: With dead ends: 413 [2020-08-21 23:40:56,142 INFO L226 Difference]: Without dead ends: 289 [2020-08-21 23:40:56,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:40:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-21 23:40:56,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-08-21 23:40:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-21 23:40:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2020-08-21 23:40:56,204 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2020-08-21 23:40:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:40:56,204 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2020-08-21 23:40:56,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:40:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2020-08-21 23:40:56,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 23:40:56,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:40:56,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:40:56,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:40:56,206 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:40:56,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:40:56,207 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2020-08-21 23:40:56,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:40:56,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920936949] [2020-08-21 23:40:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:40:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,549 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:40:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:40:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:40:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:40:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:40:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:40:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:40:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:40:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:40:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:40:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:40:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:40:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 23:40:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 23:40:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:40:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:40:56,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920936949] [2020-08-21 23:40:56,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:40:56,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:40:56,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579807417] [2020-08-21 23:40:56,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:40:56,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:40:56,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:40:56,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:40:56,686 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 12 states. [2020-08-21 23:40:57,230 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:40:57,542 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:40:57,822 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:40:58,063 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:40:58,591 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:40:59,631 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:40:59,953 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:41:00,206 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:41:00,474 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:00,812 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:41:01,051 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:41:02,467 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:41:02,835 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:41:03,757 INFO L93 Difference]: Finished difference Result 866 states and 1086 transitions. [2020-08-21 23:41:03,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 23:41:03,758 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 23:41:03,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:41:03,766 INFO L225 Difference]: With dead ends: 866 [2020-08-21 23:41:03,767 INFO L226 Difference]: Without dead ends: 644 [2020-08-21 23:41:03,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 23:41:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-21 23:41:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2020-08-21 23:41:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-08-21 23:41:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 672 transitions. [2020-08-21 23:41:03,910 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 672 transitions. Word has length 84 [2020-08-21 23:41:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:41:03,911 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 672 transitions. [2020-08-21 23:41:03,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:41:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 672 transitions. [2020-08-21 23:41:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 23:41:03,915 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:41:03,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:41:03,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:41:03,916 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:41:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:41:03,917 INFO L82 PathProgramCache]: Analyzing trace with hash -295396841, now seen corresponding path program 1 times [2020-08-21 23:41:03,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:41:03,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182592900] [2020-08-21 23:41:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:41:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,213 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:41:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:41:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:41:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:41:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:41:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:41:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:41:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:41:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:41:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 23:41:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 23:41:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 23:41:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:41:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 23:41:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 23:41:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 23:41:04,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182592900] [2020-08-21 23:41:04,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:41:04,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 23:41:04,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092794120] [2020-08-21 23:41:04,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:41:04,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:41:04,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:41:04,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:41:04,481 INFO L87 Difference]: Start difference. First operand 582 states and 672 transitions. Second operand 13 states. [2020-08-21 23:41:04,893 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:41:05,511 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:41:06,069 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:41:06,348 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 23:41:06,619 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:06,870 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:07,140 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:41:07,437 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 23:41:07,720 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:08,000 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:09,962 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:10,219 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:41:10,456 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:10,717 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:41:11,297 INFO L93 Difference]: Finished difference Result 1164 states and 1458 transitions. [2020-08-21 23:41:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 23:41:11,298 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-08-21 23:41:11,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:41:11,303 INFO L225 Difference]: With dead ends: 1164 [2020-08-21 23:41:11,304 INFO L226 Difference]: Without dead ends: 606 [2020-08-21 23:41:11,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 23:41:11,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-08-21 23:41:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 533. [2020-08-21 23:41:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-08-21 23:41:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 619 transitions. [2020-08-21 23:41:11,397 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 619 transitions. Word has length 156 [2020-08-21 23:41:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:41:11,397 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 619 transitions. [2020-08-21 23:41:11,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 23:41:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 619 transitions. [2020-08-21 23:41:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 23:41:11,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:41:11,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:41:11,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:41:11,401 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:41:11,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:41:11,402 INFO L82 PathProgramCache]: Analyzing trace with hash -935545817, now seen corresponding path program 1 times [2020-08-21 23:41:11,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:41:11,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569269915] [2020-08-21 23:41:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:41:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,667 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:41:11,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:41:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:41:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:41:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:41:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:41:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:41:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:41:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 23:41:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 23:41:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:41:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 23:41:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 23:41:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 23:41:11,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569269915] [2020-08-21 23:41:11,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:41:11,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 23:41:11,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659023546] [2020-08-21 23:41:11,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:41:11,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:41:11,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:41:11,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:41:11,953 INFO L87 Difference]: Start difference. First operand 533 states and 619 transitions. Second operand 12 states. [2020-08-21 23:41:12,626 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:12,853 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:13,074 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:13,686 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:13,926 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:14,145 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:41:15,511 INFO L93 Difference]: Finished difference Result 951 states and 1145 transitions. [2020-08-21 23:41:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:41:15,512 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 148 [2020-08-21 23:41:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:41:15,516 INFO L225 Difference]: With dead ends: 951 [2020-08-21 23:41:15,516 INFO L226 Difference]: Without dead ends: 442 [2020-08-21 23:41:15,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:41:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-21 23:41:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 416. [2020-08-21 23:41:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 23:41:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 483 transitions. [2020-08-21 23:41:15,635 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 483 transitions. Word has length 148 [2020-08-21 23:41:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:41:15,636 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 483 transitions. [2020-08-21 23:41:15,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:41:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 483 transitions. [2020-08-21 23:41:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 23:41:15,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:41:15,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:41:15,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:41:15,643 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:41:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:41:15,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2041878082, now seen corresponding path program 1 times [2020-08-21 23:41:15,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:41:15,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307942430] [2020-08-21 23:41:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:41:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:15,943 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:41:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:41:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:15,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:41:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:41:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:41:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:15,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:41:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:41:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:41:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:41:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 23:41:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 23:41:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:41:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-21 23:41:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 23:41:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-21 23:41:16,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307942430] [2020-08-21 23:41:16,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:41:16,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 23:41:16,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466848469] [2020-08-21 23:41:16,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:41:16,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:41:16,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:41:16,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:41:16,208 INFO L87 Difference]: Start difference. First operand 416 states and 483 transitions. Second operand 13 states. [2020-08-21 23:41:16,762 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:41:17,442 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:18,432 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:18,756 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:19,046 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:19,303 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:19,625 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:19,883 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:21,031 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:21,274 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:21,554 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:21,804 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:41:22,588 INFO L93 Difference]: Finished difference Result 1172 states and 1412 transitions. [2020-08-21 23:41:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 23:41:22,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 23:41:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:41:22,600 INFO L225 Difference]: With dead ends: 1172 [2020-08-21 23:41:22,600 INFO L226 Difference]: Without dead ends: 780 [2020-08-21 23:41:22,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 23:41:22,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-21 23:41:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 738. [2020-08-21 23:41:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-08-21 23:41:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 848 transitions. [2020-08-21 23:41:22,762 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 848 transitions. Word has length 152 [2020-08-21 23:41:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:41:22,764 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 848 transitions. [2020-08-21 23:41:22,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 23:41:22,765 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 848 transitions. [2020-08-21 23:41:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 23:41:22,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:41:22,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:41:22,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:41:22,770 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:41:22,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:41:22,770 INFO L82 PathProgramCache]: Analyzing trace with hash -508382690, now seen corresponding path program 1 times [2020-08-21 23:41:22,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:41:22,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467095142] [2020-08-21 23:41:22,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:41:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,064 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:41:23,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:41:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:41:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:41:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:41:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:41:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:41:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:41:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:41:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:41:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 23:41:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 23:41:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:41:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 23:41:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 23:41:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 23:41:23,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467095142] [2020-08-21 23:41:23,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:41:23,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 23:41:23,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615851515] [2020-08-21 23:41:23,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 23:41:23,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:41:23,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 23:41:23,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:41:23,543 INFO L87 Difference]: Start difference. First operand 738 states and 848 transitions. Second operand 18 states. [2020-08-21 23:41:24,147 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:41:24,472 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:24,718 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:24,966 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:25,602 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:41:26,731 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:27,074 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:27,356 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:27,621 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:27,954 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:28,228 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:28,781 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 23:41:29,341 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 23:41:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:41:31,402 INFO L93 Difference]: Finished difference Result 1398 states and 1701 transitions. [2020-08-21 23:41:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 23:41:31,403 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-08-21 23:41:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:41:31,408 INFO L225 Difference]: With dead ends: 1398 [2020-08-21 23:41:31,409 INFO L226 Difference]: Without dead ends: 820 [2020-08-21 23:41:31,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-21 23:41:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-21 23:41:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 700. [2020-08-21 23:41:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-21 23:41:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 801 transitions. [2020-08-21 23:41:31,551 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 801 transitions. Word has length 156 [2020-08-21 23:41:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:41:31,551 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 801 transitions. [2020-08-21 23:41:31,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 23:41:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 801 transitions. [2020-08-21 23:41:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 23:41:31,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:41:31,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:41:31,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:41:31,555 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:41:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:41:31,555 INFO L82 PathProgramCache]: Analyzing trace with hash -620136546, now seen corresponding path program 2 times [2020-08-21 23:41:31,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:41:31,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999121631] [2020-08-21 23:41:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:41:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,881 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:41:31,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:41:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:41:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:41:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:41:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:41:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:41:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:31,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:41:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:41:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 23:41:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 23:41:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 23:41:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:41:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 23:41:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 23:41:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 23:41:32,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999121631] [2020-08-21 23:41:32,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:41:32,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 23:41:32,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884474320] [2020-08-21 23:41:32,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 23:41:32,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:41:32,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 23:41:32,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:41:32,161 INFO L87 Difference]: Start difference. First operand 700 states and 801 transitions. Second operand 11 states. [2020-08-21 23:41:33,287 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:41:35,217 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:35,486 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:35,745 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:36,128 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:41:36,396 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:41:36,781 INFO L93 Difference]: Finished difference Result 826 states and 1019 transitions. [2020-08-21 23:41:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 23:41:36,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-08-21 23:41:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:41:36,788 INFO L225 Difference]: With dead ends: 826 [2020-08-21 23:41:36,788 INFO L226 Difference]: Without dead ends: 823 [2020-08-21 23:41:36,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 23:41:36,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-08-21 23:41:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 700. [2020-08-21 23:41:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-21 23:41:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 799 transitions. [2020-08-21 23:41:36,931 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 799 transitions. Word has length 156 [2020-08-21 23:41:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:41:36,933 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 799 transitions. [2020-08-21 23:41:36,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 23:41:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 799 transitions. [2020-08-21 23:41:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-21 23:41:36,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:41:36,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:41:36,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:41:36,938 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:41:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:41:36,938 INFO L82 PathProgramCache]: Analyzing trace with hash 350169461, now seen corresponding path program 1 times [2020-08-21 23:41:36,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:41:36,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121672169] [2020-08-21 23:41:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:41:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,297 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:41:37,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:41:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:41:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:41:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:41:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:41:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:41:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:41:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:41:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:41:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 23:41:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 23:41:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:41:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:41:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 23:41:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:41:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 23:41:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 23:41:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:41:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 23:41:37,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121672169] [2020-08-21 23:41:37,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:41:37,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 23:41:37,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820498182] [2020-08-21 23:41:37,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:41:37,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:41:37,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:41:37,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:41:37,585 INFO L87 Difference]: Start difference. First operand 700 states and 799 transitions. Second operand 12 states. [2020-08-21 23:41:38,205 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:41:39,071 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:41:39,656 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:41:39,947 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:41:40,196 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:41:40,439 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:41:40,731 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:41:41,000 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190