/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:00:27,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:00:27,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:00:27,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:00:27,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:00:27,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:00:27,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:00:27,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:00:27,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:00:27,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:00:27,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:00:27,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:00:27,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:00:27,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:00:27,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:00:27,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:00:27,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:00:27,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:00:27,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:00:27,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:00:27,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:00:27,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:00:27,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:00:27,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:00:27,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:00:27,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:00:27,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:00:27,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:00:27,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:00:27,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:00:27,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:00:27,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:00:27,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:00:27,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:00:27,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:00:27,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:00:27,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:00:27,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:00:27,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:00:27,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:00:27,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:00:27,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 17:00:27,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:00:27,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:00:27,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:00:27,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:00:27,989 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:00:27,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:00:27,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:00:27,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:00:27,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:00:27,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:00:27,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:00:27,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:00:27,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:00:27,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:00:27,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:00:27,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:00:27,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:00:27,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:00:27,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:00:27,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:00:27,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:00:27,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:00:27,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:00:27,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:00:27,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:00:27,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:00:27,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:00:27,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:00:27,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:00:27,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:00:28,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:00:28,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:00:28,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:00:28,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:00:28,344 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:00:28,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-08-18 17:00:28,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d083c792/eae37bf240ef430aa140dd31226bde78/FLAG4c347dcc5 [2020-08-18 17:00:28,928 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:00:28,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2020-08-18 17:00:28,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d083c792/eae37bf240ef430aa140dd31226bde78/FLAG4c347dcc5 [2020-08-18 17:00:29,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d083c792/eae37bf240ef430aa140dd31226bde78 [2020-08-18 17:00:29,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:00:29,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:00:29,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:00:29,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:00:29,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:00:29,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:00:29" (1/1) ... [2020-08-18 17:00:29,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a688b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:29, skipping insertion in model container [2020-08-18 17:00:29,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:00:29" (1/1) ... [2020-08-18 17:00:29,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:00:29,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:00:29,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:00:29,996 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:00:30,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:00:30,125 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:00:30,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30 WrapperNode [2020-08-18 17:00:30,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:00:30,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:00:30,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:00:30,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:00:30,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30" (1/1) ... [2020-08-18 17:00:30,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30" (1/1) ... [2020-08-18 17:00:30,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30" (1/1) ... [2020-08-18 17:00:30,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30" (1/1) ... [2020-08-18 17:00:30,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30" (1/1) ... [2020-08-18 17:00:30,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30" (1/1) ... [2020-08-18 17:00:30,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30" (1/1) ... [2020-08-18 17:00:30,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:00:30,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:00:30,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:00:30,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:00:30,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:00:30,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:00:30,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:00:30,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:00:30,299 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:00:30,299 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:00:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:00:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:00:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:00:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:00:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:00:30,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 17:00:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:00:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:00:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:00:30,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 17:00:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:00:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:00:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:00:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:00:30,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:00:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:00:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:00:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 17:00:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 17:00:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 17:00:30,303 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:00:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:00:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:00:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:00:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:00:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:00:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 17:00:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 17:00:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 17:00:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:00:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:00:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:00:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:00:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:00:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:00:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:00:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:00:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:00:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:00:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:00:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:00:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:00:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:00:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:00:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:00:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:00:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:00:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:00:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:00:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:00:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 17:00:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:00:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:00:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:00:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:00:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:00:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:00:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 17:00:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 17:00:30,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 17:00:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 17:00:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:00:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:00:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:00:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:00:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 17:00:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 17:00:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:00:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:00:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:00:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:00:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:00:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:00:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:00:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:00:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 17:00:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:00:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:00:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:00:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:00:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:00:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:00:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:00:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:00:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:00:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:00:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:00:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:00:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:00:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:00:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:00:30,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:00:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:00:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:00:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:00:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:00:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:00:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:00:30,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:00:31,392 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:00:31,393 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:00:31,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:00:31 BoogieIcfgContainer [2020-08-18 17:00:31,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:00:31,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:00:31,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:00:31,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:00:31,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:00:29" (1/3) ... [2020-08-18 17:00:31,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29352973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:00:31, skipping insertion in model container [2020-08-18 17:00:31,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:30" (2/3) ... [2020-08-18 17:00:31,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29352973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:00:31, skipping insertion in model container [2020-08-18 17:00:31,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:00:31" (3/3) ... [2020-08-18 17:00:31,416 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2020-08-18 17:00:31,426 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:00:31,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:00:31,443 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:00:31,467 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:00:31,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:00:31,467 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:00:31,468 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:00:31,468 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:00:31,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:00:31,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:00:31,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:00:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-08-18 17:00:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 17:00:31,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:31,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:31,520 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:31,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:31,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1747867680, now seen corresponding path program 1 times [2020-08-18 17:00:31,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:31,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769985234] [2020-08-18 17:00:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,306 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:32,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:00:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:00:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:32,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769985234] [2020-08-18 17:00:32,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:32,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:00:32,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615069472] [2020-08-18 17:00:32,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:00:32,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:32,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:00:32,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:00:32,469 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 4 states. [2020-08-18 17:00:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:33,776 INFO L93 Difference]: Finished difference Result 366 states and 469 transitions. [2020-08-18 17:00:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:00:33,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 17:00:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:33,794 INFO L225 Difference]: With dead ends: 366 [2020-08-18 17:00:33,794 INFO L226 Difference]: Without dead ends: 201 [2020-08-18 17:00:33,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:00:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-08-18 17:00:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2020-08-18 17:00:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-18 17:00:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 196 transitions. [2020-08-18 17:00:33,926 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 196 transitions. Word has length 59 [2020-08-18 17:00:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:33,927 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 196 transitions. [2020-08-18 17:00:33,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:00:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 196 transitions. [2020-08-18 17:00:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 17:00:33,932 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:33,932 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:33,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:00:33,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:33,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:33,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2102602730, now seen corresponding path program 1 times [2020-08-18 17:00:33,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:33,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823455265] [2020-08-18 17:00:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,242 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:34,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:00:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 17:00:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 17:00:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:34,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823455265] [2020-08-18 17:00:34,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:34,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:00:34,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541191368] [2020-08-18 17:00:34,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:00:34,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:34,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:00:34,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:00:34,310 INFO L87 Difference]: Start difference. First operand 166 states and 196 transitions. Second operand 5 states. [2020-08-18 17:00:34,799 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:35,859 INFO L93 Difference]: Finished difference Result 301 states and 369 transitions. [2020-08-18 17:00:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:00:35,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 17:00:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:35,868 INFO L225 Difference]: With dead ends: 301 [2020-08-18 17:00:35,869 INFO L226 Difference]: Without dead ends: 191 [2020-08-18 17:00:35,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:00:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-18 17:00:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-08-18 17:00:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-18 17:00:35,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2020-08-18 17:00:35,920 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 60 [2020-08-18 17:00:35,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:35,921 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2020-08-18 17:00:35,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:00:35,921 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2020-08-18 17:00:35,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 17:00:35,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:35,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:35,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:00:35,924 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:35,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:35,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1388581610, now seen corresponding path program 1 times [2020-08-18 17:00:35,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:35,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472405233] [2020-08-18 17:00:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,265 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:36,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:00:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 17:00:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:36,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472405233] [2020-08-18 17:00:36,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:36,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:00:36,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3258511] [2020-08-18 17:00:36,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:00:36,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:36,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:00:36,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:00:36,418 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand 9 states. [2020-08-18 17:00:36,870 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:37,174 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:37,423 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:37,647 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:38,540 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:40,696 INFO L93 Difference]: Finished difference Result 524 states and 649 transitions. [2020-08-18 17:00:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:00:40,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 17:00:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:40,704 INFO L225 Difference]: With dead ends: 524 [2020-08-18 17:00:40,704 INFO L226 Difference]: Without dead ends: 395 [2020-08-18 17:00:40,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:00:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-18 17:00:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 330. [2020-08-18 17:00:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-08-18 17:00:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 400 transitions. [2020-08-18 17:00:40,788 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 400 transitions. Word has length 65 [2020-08-18 17:00:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:40,789 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 400 transitions. [2020-08-18 17:00:40,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:00:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 400 transitions. [2020-08-18 17:00:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 17:00:40,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:40,792 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:40,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:00:40,792 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash -262157671, now seen corresponding path program 1 times [2020-08-18 17:00:40,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:40,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862832604] [2020-08-18 17:00:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,088 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:41,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:00:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:00:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 17:00:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:00:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 17:00:41,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862832604] [2020-08-18 17:00:41,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:41,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:00:41,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949385495] [2020-08-18 17:00:41,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:00:41,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:41,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:00:41,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:00:41,183 INFO L87 Difference]: Start difference. First operand 330 states and 400 transitions. Second operand 9 states. [2020-08-18 17:00:41,580 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:42,331 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:43,144 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:43,459 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:43,707 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:43,962 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:44,905 INFO L93 Difference]: Finished difference Result 843 states and 1098 transitions. [2020-08-18 17:00:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 17:00:44,906 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 17:00:44,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:44,912 INFO L225 Difference]: With dead ends: 843 [2020-08-18 17:00:44,912 INFO L226 Difference]: Without dead ends: 541 [2020-08-18 17:00:44,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:00:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-18 17:00:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 473. [2020-08-18 17:00:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-08-18 17:00:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 569 transitions. [2020-08-18 17:00:45,039 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 569 transitions. Word has length 70 [2020-08-18 17:00:45,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:45,040 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 569 transitions. [2020-08-18 17:00:45,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:00:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 569 transitions. [2020-08-18 17:00:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 17:00:45,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:45,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:45,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:00:45,043 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:45,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:45,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1621424268, now seen corresponding path program 1 times [2020-08-18 17:00:45,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:45,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567453724] [2020-08-18 17:00:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,300 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:45,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:00:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 17:00:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 17:00:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:45,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567453724] [2020-08-18 17:00:45,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:45,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:00:45,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829304544] [2020-08-18 17:00:45,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:00:45,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:45,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:00:45,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:00:45,437 INFO L87 Difference]: Start difference. First operand 473 states and 569 transitions. Second operand 9 states. [2020-08-18 17:00:46,574 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:46,834 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:47,092 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:47,335 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:48,239 INFO L93 Difference]: Finished difference Result 1007 states and 1277 transitions. [2020-08-18 17:00:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:00:48,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-18 17:00:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:48,247 INFO L225 Difference]: With dead ends: 1007 [2020-08-18 17:00:48,247 INFO L226 Difference]: Without dead ends: 562 [2020-08-18 17:00:48,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:00:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-18 17:00:48,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 486. [2020-08-18 17:00:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-18 17:00:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-18 17:00:48,357 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 98 [2020-08-18 17:00:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:48,357 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-18 17:00:48,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:00:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-18 17:00:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 17:00:48,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:48,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:48,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:00:48,360 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:48,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:48,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1693810826, now seen corresponding path program 1 times [2020-08-18 17:00:48,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:48,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592614311] [2020-08-18 17:00:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,648 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:48,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:00:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 17:00:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 17:00:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:48,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592614311] [2020-08-18 17:00:48,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:48,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 17:00:48,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512199856] [2020-08-18 17:00:48,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 17:00:48,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:48,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 17:00:48,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:00:48,776 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 11 states. [2020-08-18 17:00:49,244 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:49,492 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:49,724 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:50,533 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:50,793 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:51,036 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:52,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:52,082 INFO L93 Difference]: Finished difference Result 1034 states and 1330 transitions. [2020-08-18 17:00:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:00:52,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-18 17:00:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:52,091 INFO L225 Difference]: With dead ends: 1034 [2020-08-18 17:00:52,091 INFO L226 Difference]: Without dead ends: 576 [2020-08-18 17:00:52,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:00:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-08-18 17:00:52,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 494. [2020-08-18 17:00:52,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-08-18 17:00:52,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 591 transitions. [2020-08-18 17:00:52,198 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 591 transitions. Word has length 98 [2020-08-18 17:00:52,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:52,200 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 591 transitions. [2020-08-18 17:00:52,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 17:00:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 591 transitions. [2020-08-18 17:00:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 17:00:52,205 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:52,205 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:52,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:00:52,205 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:52,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1364045065, now seen corresponding path program 1 times [2020-08-18 17:00:52,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:52,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981111142] [2020-08-18 17:00:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,503 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:00:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 17:00:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 17:00:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:52,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981111142] [2020-08-18 17:00:52,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:52,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:00:52,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787961260] [2020-08-18 17:00:52,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:00:52,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:52,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:00:52,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:00:52,731 INFO L87 Difference]: Start difference. First operand 494 states and 591 transitions. Second operand 7 states. [2020-08-18 17:00:53,194 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:53,706 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:56,026 INFO L93 Difference]: Finished difference Result 1535 states and 1984 transitions. [2020-08-18 17:00:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:00:56,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-18 17:00:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:56,039 INFO L225 Difference]: With dead ends: 1535 [2020-08-18 17:00:56,039 INFO L226 Difference]: Without dead ends: 1069 [2020-08-18 17:00:56,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:00:56,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-08-18 17:00:56,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 991. [2020-08-18 17:00:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-08-18 17:00:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1203 transitions. [2020-08-18 17:00:56,233 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1203 transitions. Word has length 98 [2020-08-18 17:00:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:56,235 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1203 transitions. [2020-08-18 17:00:56,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:00:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1203 transitions. [2020-08-18 17:00:56,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 17:00:56,239 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:56,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:56,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:00:56,240 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:56,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:56,240 INFO L82 PathProgramCache]: Analyzing trace with hash 884836017, now seen corresponding path program 1 times [2020-08-18 17:00:56,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:56,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775550209] [2020-08-18 17:00:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,623 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:56,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:00:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 17:00:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 17:00:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 17:00:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:56,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775550209] [2020-08-18 17:00:56,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:56,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 17:00:56,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909533023] [2020-08-18 17:00:56,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:00:56,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:56,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:00:56,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:00:56,830 INFO L87 Difference]: Start difference. First operand 991 states and 1203 transitions. Second operand 12 states. [2020-08-18 17:00:57,287 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:57,922 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:58,570 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:58,878 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:59,131 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:59,397 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:59,651 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:01,673 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:02,004 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:01:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:01:02,656 INFO L93 Difference]: Finished difference Result 2813 states and 3636 transitions. [2020-08-18 17:01:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 17:01:02,657 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-08-18 17:01:02,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:01:02,669 INFO L225 Difference]: With dead ends: 2813 [2020-08-18 17:01:02,669 INFO L226 Difference]: Without dead ends: 2052 [2020-08-18 17:01:02,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 17:01:02,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2020-08-18 17:01:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1740. [2020-08-18 17:01:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1740 states. [2020-08-18 17:01:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2094 transitions. [2020-08-18 17:01:03,012 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2094 transitions. Word has length 102 [2020-08-18 17:01:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:01:03,015 INFO L479 AbstractCegarLoop]: Abstraction has 1740 states and 2094 transitions. [2020-08-18 17:01:03,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:01:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2094 transitions. [2020-08-18 17:01:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-08-18 17:01:03,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:01:03,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:01:03,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:01:03,024 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:01:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:01:03,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1627137653, now seen corresponding path program 1 times [2020-08-18 17:01:03,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:01:03,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827490572] [2020-08-18 17:01:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:01:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,345 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:01:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:01:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:01:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:01:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:01:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:01:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 17:01:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:01:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:01:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 17:01:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 17:01:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-18 17:01:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:01:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 17:01:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-18 17:01:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 17:01:03,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827490572] [2020-08-18 17:01:03,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:01:03,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:01:03,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286747847] [2020-08-18 17:01:03,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:01:03,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:01:03,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:01:03,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:01:03,652 INFO L87 Difference]: Start difference. First operand 1740 states and 2094 transitions. Second operand 16 states. [2020-08-18 17:01:04,480 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:04,920 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:01:05,277 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:01:05,495 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:01:06,114 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:06,374 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:06,722 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:01:06,994 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:01:08,125 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:08,775 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:09,051 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:09,409 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:09,960 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:01:10,354 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:11,131 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:11,425 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:01:12,074 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:01:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:01:12,900 INFO L93 Difference]: Finished difference Result 3741 states and 4632 transitions. [2020-08-18 17:01:12,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 17:01:12,901 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2020-08-18 17:01:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:01:12,915 INFO L225 Difference]: With dead ends: 3741 [2020-08-18 17:01:12,916 INFO L226 Difference]: Without dead ends: 2219 [2020-08-18 17:01:12,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-18 17:01:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2020-08-18 17:01:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2027. [2020-08-18 17:01:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2020-08-18 17:01:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2384 transitions. [2020-08-18 17:01:13,261 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2384 transitions. Word has length 180 [2020-08-18 17:01:13,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:01:13,262 INFO L479 AbstractCegarLoop]: Abstraction has 2027 states and 2384 transitions. [2020-08-18 17:01:13,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:01:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2384 transitions. [2020-08-18 17:01:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-08-18 17:01:13,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:01:13,272 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 17:01:13,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:01:13,273 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:01:13,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:01:13,273 INFO L82 PathProgramCache]: Analyzing trace with hash -489961037, now seen corresponding path program 1 times [2020-08-18 17:01:13,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:01:13,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070101811] [2020-08-18 17:01:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:01:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,556 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:01:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:01:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:01:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:01:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:01:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:01:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 17:01:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:01:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:01:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 17:01:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:01:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 17:01:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 17:01:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:01:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:01:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-18 17:01:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-08-18 17:01:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-18 17:01:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-18 17:01:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-18 17:01:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-08-18 17:01:14,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070101811] [2020-08-18 17:01:14,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:01:14,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 17:01:14,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089584207] [2020-08-18 17:01:14,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 17:01:14,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:01:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 17:01:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:01:14,199 INFO L87 Difference]: Start difference. First operand 2027 states and 2384 transitions. Second operand 15 states. [2020-08-18 17:01:15,483 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:01:15,751 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:15,990 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:16,238 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:17,284 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:01:19,339 INFO L93 Difference]: Finished difference Result 5499 states and 6729 transitions. [2020-08-18 17:01:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 17:01:19,340 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 305 [2020-08-18 17:01:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:01:19,356 INFO L225 Difference]: With dead ends: 5499 [2020-08-18 17:01:19,357 INFO L226 Difference]: Without dead ends: 3170 [2020-08-18 17:01:19,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 17:01:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2020-08-18 17:01:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2752. [2020-08-18 17:01:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2752 states. [2020-08-18 17:01:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3317 transitions. [2020-08-18 17:01:19,888 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3317 transitions. Word has length 305 [2020-08-18 17:01:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:01:19,888 INFO L479 AbstractCegarLoop]: Abstraction has 2752 states and 3317 transitions. [2020-08-18 17:01:19,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 17:01:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3317 transitions. [2020-08-18 17:01:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-18 17:01:19,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:01:19,901 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 17:01:19,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:01:19,902 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:01:19,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:01:19,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1453218862, now seen corresponding path program 1 times [2020-08-18 17:01:19,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:01:19,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375552038] [2020-08-18 17:01:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:01:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,249 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:01:20,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:01:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:01:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:01:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:01:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:01:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 17:01:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:01:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:01:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 17:01:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:01:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 17:01:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:01:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-18 17:01:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:01:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:01:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 17:01:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-18 17:01:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-18 17:01:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-18 17:01:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-18 17:01:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 91 proven. 42 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-08-18 17:01:20,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375552038] [2020-08-18 17:01:20,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:01:20,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:01:20,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292249482] [2020-08-18 17:01:20,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:01:20,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:01:20,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:01:20,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:01:20,608 INFO L87 Difference]: Start difference. First operand 2752 states and 3317 transitions. Second operand 16 states. [2020-08-18 17:01:21,118 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:21,434 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:21,675 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:21,912 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:22,574 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:23,545 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:23,865 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:24,161 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:24,689 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:25,629 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:25,922 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:01:26,673 INFO L93 Difference]: Finished difference Result 5270 states and 6441 transitions. [2020-08-18 17:01:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 17:01:26,674 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 311 [2020-08-18 17:01:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:01:26,695 INFO L225 Difference]: With dead ends: 5270 [2020-08-18 17:01:26,696 INFO L226 Difference]: Without dead ends: 2759 [2020-08-18 17:01:26,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 17:01:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states.