/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:45:36,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:45:36,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:45:36,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:45:36,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:45:36,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:45:36,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:45:36,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:45:36,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:45:36,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:45:36,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:45:36,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:45:36,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:45:36,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:45:36,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:45:36,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:45:36,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:45:36,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:45:36,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:45:36,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:45:36,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:45:36,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:45:36,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:45:36,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:45:36,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:45:36,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:45:36,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:45:36,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:45:36,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:45:36,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:45:36,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:45:36,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:45:36,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:45:36,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:45:36,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:45:36,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:45:36,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:45:36,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:45:36,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:45:36,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:45:36,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:45:36,460 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 [2020-08-27 21:45:36,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:45:36,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:45:36,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:45:36,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:45:36,513 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:45:36,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:45:36,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:45:36,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:45:36,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:45:36,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:45:36,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:45:36,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:45:36,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:45:36,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:45:36,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:45:36,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:45:36,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:45:36,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:45:36,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:45:36,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:45:36,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:45:36,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:45:36,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:45:36,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:45:36,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:45:36,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:45:36,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:45:36,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:45:36,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:45:36,519 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 -> false [2020-08-27 21:45:36,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:45:36,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:45:36,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:45:36,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:45:36,986 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:45:36,987 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2020-08-27 21:45:37,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5f6b3d20/b259f246bece4a4daf1ee376cbb92ec9/FLAG6e40bdbc3 [2020-08-27 21:45:37,720 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:45:37,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2020-08-27 21:45:37,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5f6b3d20/b259f246bece4a4daf1ee376cbb92ec9/FLAG6e40bdbc3 [2020-08-27 21:45:37,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5f6b3d20/b259f246bece4a4daf1ee376cbb92ec9 [2020-08-27 21:45:37,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:45:37,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:45:37,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:45:37,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:45:37,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:45:37,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:45:37" (1/1) ... [2020-08-27 21:45:37,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:37, skipping insertion in model container [2020-08-27 21:45:37,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:45:37" (1/1) ... [2020-08-27 21:45:37,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:45:38,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:45:38,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:45:38,606 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:45:38,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:45:38,725 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:45:38,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38 WrapperNode [2020-08-27 21:45:38,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:45:38,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:45:38,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:45:38,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:45:38,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38" (1/1) ... [2020-08-27 21:45:38,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38" (1/1) ... [2020-08-27 21:45:38,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38" (1/1) ... [2020-08-27 21:45:38,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38" (1/1) ... [2020-08-27 21:45:38,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38" (1/1) ... [2020-08-27 21:45:38,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38" (1/1) ... [2020-08-27 21:45:38,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38" (1/1) ... [2020-08-27 21:45:38,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:45:38,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:45:38,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:45:38,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:45:38,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38" (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 [2020-08-27 21:45:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:45:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:45:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:45:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:45:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:45:38,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:45:38,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:45:38,923 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:45:38,923 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:45:38,924 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:45:38,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:45:38,924 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:45:38,924 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:45:38,924 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:45:38,924 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:45:38,925 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:45:38,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:45:38,925 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:45:38,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:45:38,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:45:38,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:45:38,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:45:38,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:45:38,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:45:38,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:45:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:45:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:45:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:45:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:45:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:45:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:45:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:45:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:45:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:45:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:45:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-27 21:45:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:45:38,928 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:45:38,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:45:38,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:45:38,929 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:45:38,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:45:38,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:45:38,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:45:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:45:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:45:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:45:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:45:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:45:38,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:45:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:45:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:45:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:45:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:45:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:45:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:45:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:45:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:45:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:45:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:45:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:45:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:45:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:45:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:45:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:45:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:45:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:45:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:45:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:45:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:45:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:45:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:45:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:45:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:45:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:45:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:45:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:45:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:45:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:45:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:45:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:45:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:45:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:45:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:45:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:45:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:45:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:45:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:45:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:45:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:45:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-27 21:45:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:45:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:45:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:45:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:45:40,069 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:45:40,069 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:45:40,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:45:40 BoogieIcfgContainer [2020-08-27 21:45:40,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:45:40,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:45:40,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:45:40,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:45:40,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:45:37" (1/3) ... [2020-08-27 21:45:40,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae42524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:45:40, skipping insertion in model container [2020-08-27 21:45:40,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:38" (2/3) ... [2020-08-27 21:45:40,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae42524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:45:40, skipping insertion in model container [2020-08-27 21:45:40,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:45:40" (3/3) ... [2020-08-27 21:45:40,087 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2020-08-27 21:45:40,099 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:45:40,109 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:45:40,128 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:45:40,156 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:45:40,156 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:45:40,156 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:45:40,156 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:45:40,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:45:40,157 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:45:40,157 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:45:40,157 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:45:40,184 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-27 21:45:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-27 21:45:40,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:40,198 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] [2020-08-27 21:45:40,199 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:40,207 INFO L82 PathProgramCache]: Analyzing trace with hash 479094946, now seen corresponding path program 1 times [2020-08-27 21:45:40,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:40,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897200866] [2020-08-27 21:45:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:40,983 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:45:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:45:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:45:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:41,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897200866] [2020-08-27 21:45:41,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:41,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:45:41,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444713631] [2020-08-27 21:45:41,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:45:41,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:41,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:45:41,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:45:41,168 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 4 states. [2020-08-27 21:45:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:42,407 INFO L93 Difference]: Finished difference Result 335 states and 423 transitions. [2020-08-27 21:45:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:45:42,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-27 21:45:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:42,428 INFO L225 Difference]: With dead ends: 335 [2020-08-27 21:45:42,428 INFO L226 Difference]: Without dead ends: 183 [2020-08-27 21:45:42,434 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 [2020-08-27 21:45:42,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-27 21:45:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2020-08-27 21:45:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-27 21:45:42,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2020-08-27 21:45:42,549 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 59 [2020-08-27 21:45:42,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:42,549 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2020-08-27 21:45:42,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:45:42,550 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2020-08-27 21:45:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-27 21:45:42,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:42,554 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] [2020-08-27 21:45:42,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:45:42,555 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:42,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1126861649, now seen corresponding path program 1 times [2020-08-27 21:45:42,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:42,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700564740] [2020-08-27 21:45:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:42,969 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:42,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:45:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-27 21:45:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-27 21:45:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:43,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700564740] [2020-08-27 21:45:43,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:43,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:45:43,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851301818] [2020-08-27 21:45:43,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:45:43,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:45:43,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:45:43,123 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand 9 states. [2020-08-27 21:45:43,548 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:43,932 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:44,230 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:44,544 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:46,039 INFO L93 Difference]: Finished difference Result 308 states and 378 transitions. [2020-08-27 21:45:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:45:46,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-27 21:45:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:46,045 INFO L225 Difference]: With dead ends: 308 [2020-08-27 21:45:46,045 INFO L226 Difference]: Without dead ends: 183 [2020-08-27 21:45:46,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:45:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-27 21:45:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2020-08-27 21:45:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-27 21:45:46,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2020-08-27 21:45:46,093 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 64 [2020-08-27 21:45:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:46,094 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2020-08-27 21:45:46,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:45:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2020-08-27 21:45:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-27 21:45:46,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:46,098 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] [2020-08-27 21:45:46,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:45:46,098 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:46,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:46,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1745445590, now seen corresponding path program 1 times [2020-08-27 21:45:46,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:46,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024165955] [2020-08-27 21:45:46,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,483 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:46,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:45:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:45:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-27 21:45:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-27 21:45:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:46,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024165955] [2020-08-27 21:45:46,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:46,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:45:46,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883998961] [2020-08-27 21:45:46,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:45:46,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:46,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:45:46,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:45:46,688 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand 7 states. [2020-08-27 21:45:47,145 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:48,832 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:49,750 INFO L93 Difference]: Finished difference Result 445 states and 574 transitions. [2020-08-27 21:45:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:45:49,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-27 21:45:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:49,756 INFO L225 Difference]: With dead ends: 445 [2020-08-27 21:45:49,756 INFO L226 Difference]: Without dead ends: 320 [2020-08-27 21:45:49,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:45:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-27 21:45:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 259. [2020-08-27 21:45:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-27 21:45:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 309 transitions. [2020-08-27 21:45:49,823 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 309 transitions. Word has length 77 [2020-08-27 21:45:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:49,824 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 309 transitions. [2020-08-27 21:45:49,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:45:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 309 transitions. [2020-08-27 21:45:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-27 21:45:49,826 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:49,827 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] [2020-08-27 21:45:49,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:45:49,827 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1775922839, now seen corresponding path program 1 times [2020-08-27 21:45:49,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:49,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832822933] [2020-08-27 21:45:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,222 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:50,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:45:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:45:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:45:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-27 21:45:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-27 21:45:50,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832822933] [2020-08-27 21:45:50,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:50,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:45:50,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969272932] [2020-08-27 21:45:50,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:45:50,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:50,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:45:50,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:45:50,401 INFO L87 Difference]: Start difference. First operand 259 states and 309 transitions. Second operand 9 states. [2020-08-27 21:45:50,915 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:51,659 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:52,780 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:53,152 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:53,662 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:53,958 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:54,834 INFO L93 Difference]: Finished difference Result 540 states and 684 transitions. [2020-08-27 21:45:54,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:45:54,834 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-27 21:45:54,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:54,838 INFO L225 Difference]: With dead ends: 540 [2020-08-27 21:45:54,838 INFO L226 Difference]: Without dead ends: 309 [2020-08-27 21:45:54,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:45:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-27 21:45:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 258. [2020-08-27 21:45:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-27 21:45:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 306 transitions. [2020-08-27 21:45:54,922 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 306 transitions. Word has length 91 [2020-08-27 21:45:54,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:54,924 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 306 transitions. [2020-08-27 21:45:54,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:45:54,924 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 306 transitions. [2020-08-27 21:45:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-27 21:45:54,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:54,931 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, 1] [2020-08-27 21:45:54,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:45:54,932 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:54,932 INFO L82 PathProgramCache]: Analyzing trace with hash 534241489, now seen corresponding path program 1 times [2020-08-27 21:45:54,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:54,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40588924] [2020-08-27 21:45:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,289 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:45:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:45:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:45:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 21:45:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:55,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40588924] [2020-08-27 21:45:55,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:55,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:45:55,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442365758] [2020-08-27 21:45:55,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:45:55,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:55,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:45:55,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:45:55,502 INFO L87 Difference]: Start difference. First operand 258 states and 306 transitions. Second operand 10 states. [2020-08-27 21:45:56,226 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:56,981 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:57,298 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:45:57,605 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:57,905 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:58,956 INFO L93 Difference]: Finished difference Result 502 states and 624 transitions. [2020-08-27 21:45:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-27 21:45:58,959 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-27 21:45:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:58,963 INFO L225 Difference]: With dead ends: 502 [2020-08-27 21:45:58,963 INFO L226 Difference]: Without dead ends: 272 [2020-08-27 21:45:58,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:45:58,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-08-27 21:45:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 233. [2020-08-27 21:45:59,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-27 21:45:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 264 transitions. [2020-08-27 21:45:59,026 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 264 transitions. Word has length 103 [2020-08-27 21:45:59,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:59,028 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 264 transitions. [2020-08-27 21:45:59,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:45:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 264 transitions. [2020-08-27 21:45:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-27 21:45:59,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:59,030 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, 1, 1, 1, 1, 1] [2020-08-27 21:45:59,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:45:59,031 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash 697480839, now seen corresponding path program 1 times [2020-08-27 21:45:59,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:59,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091178990] [2020-08-27 21:45:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,338 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:59,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:45:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:45:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-27 21:45:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:45:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:59,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091178990] [2020-08-27 21:45:59,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:59,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 21:45:59,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481175569] [2020-08-27 21:45:59,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:45:59,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:59,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:45:59,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:45:59,630 INFO L87 Difference]: Start difference. First operand 233 states and 264 transitions. Second operand 11 states. [2020-08-27 21:46:00,203 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:00,508 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:00,796 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:01,622 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:01,955 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:02,276 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:03,341 INFO L93 Difference]: Finished difference Result 482 states and 584 transitions. [2020-08-27 21:46:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:46:03,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-27 21:46:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:03,344 INFO L225 Difference]: With dead ends: 482 [2020-08-27 21:46:03,344 INFO L226 Difference]: Without dead ends: 277 [2020-08-27 21:46:03,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:46:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-27 21:46:03,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 237. [2020-08-27 21:46:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-27 21:46:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 268 transitions. [2020-08-27 21:46:03,410 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 268 transitions. Word has length 107 [2020-08-27 21:46:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:03,410 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 268 transitions. [2020-08-27 21:46:03,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:46:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 268 transitions. [2020-08-27 21:46:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-27 21:46:03,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:03,413 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, 1, 1, 1, 1, 1] [2020-08-27 21:46:03,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:46:03,414 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:03,414 INFO L82 PathProgramCache]: Analyzing trace with hash 456940710, now seen corresponding path program 1 times [2020-08-27 21:46:03,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:03,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288139737] [2020-08-27 21:46:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,765 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:46:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:46:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-27 21:46:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:46:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:03,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288139737] [2020-08-27 21:46:03,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:03,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:46:03,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105491826] [2020-08-27 21:46:03,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:46:03,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:03,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:46:03,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:46:03,970 INFO L87 Difference]: Start difference. First operand 237 states and 268 transitions. Second operand 7 states. [2020-08-27 21:46:04,389 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:05,071 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:06,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:06,960 INFO L93 Difference]: Finished difference Result 651 states and 808 transitions. [2020-08-27 21:46:06,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:46:06,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-08-27 21:46:06,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:06,964 INFO L225 Difference]: With dead ends: 651 [2020-08-27 21:46:06,965 INFO L226 Difference]: Without dead ends: 442 [2020-08-27 21:46:06,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:46:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-27 21:46:07,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 404. [2020-08-27 21:46:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-08-27 21:46:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 472 transitions. [2020-08-27 21:46:07,070 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 472 transitions. Word has length 107 [2020-08-27 21:46:07,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:07,070 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 472 transitions. [2020-08-27 21:46:07,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:46:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 472 transitions. [2020-08-27 21:46:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-27 21:46:07,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:07,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:07,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:46:07,078 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:07,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:07,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1562894580, now seen corresponding path program 1 times [2020-08-27 21:46:07,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:07,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622713288] [2020-08-27 21:46:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,523 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:46:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:46:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-27 21:46:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 21:46:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:07,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622713288] [2020-08-27 21:46:07,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:07,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:46:07,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630511538] [2020-08-27 21:46:07,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:46:07,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:07,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:46:07,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:46:07,769 INFO L87 Difference]: Start difference. First operand 404 states and 472 transitions. Second operand 12 states. [2020-08-27 21:46:08,275 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:09,021 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:10,113 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:10,465 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:10,787 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:11,117 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:11,461 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:12,969 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:13,307 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:14,119 INFO L93 Difference]: Finished difference Result 1116 states and 1385 transitions. [2020-08-27 21:46:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-27 21:46:14,119 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-27 21:46:14,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:14,126 INFO L225 Difference]: With dead ends: 1116 [2020-08-27 21:46:14,126 INFO L226 Difference]: Without dead ends: 810 [2020-08-27 21:46:14,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-27 21:46:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-08-27 21:46:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 700. [2020-08-27 21:46:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-27 21:46:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 810 transitions. [2020-08-27 21:46:14,256 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 810 transitions. Word has length 111 [2020-08-27 21:46:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:14,258 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 810 transitions. [2020-08-27 21:46:14,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:46:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 810 transitions. [2020-08-27 21:46:14,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-27 21:46:14,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:14,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:14,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:46:14,263 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:14,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:14,264 INFO L82 PathProgramCache]: Analyzing trace with hash 903450751, now seen corresponding path program 1 times [2020-08-27 21:46:14,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:14,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893648592] [2020-08-27 21:46:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,666 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:46:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:46:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:46:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-27 21:46:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-27 21:46:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:46:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:46:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:46:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-27 21:46:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-27 21:46:15,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893648592] [2020-08-27 21:46:15,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:46:15,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:46:15,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627968750] [2020-08-27 21:46:15,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:46:15,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:15,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:46:15,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:46:15,139 INFO L87 Difference]: Start difference. First operand 700 states and 810 transitions. Second operand 16 states. [2020-08-27 21:46:16,154 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:16,576 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:46:16,839 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:46:17,140 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:46:17,782 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:18,125 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:19,011 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:19,800 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:20,327 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:20,863 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:21,205 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:21,579 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:22,261 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:22,760 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:23,196 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:23,981 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:24,342 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:25,109 INFO L93 Difference]: Finished difference Result 1513 states and 1807 transitions. [2020-08-27 21:46:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-27 21:46:25,110 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-27 21:46:25,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:25,116 INFO L225 Difference]: With dead ends: 1513 [2020-08-27 21:46:25,117 INFO L226 Difference]: Without dead ends: 907 [2020-08-27 21:46:25,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-27 21:46:25,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-08-27 21:46:25,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 828. [2020-08-27 21:46:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-08-27 21:46:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 968 transitions. [2020-08-27 21:46:25,279 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 968 transitions. Word has length 172 [2020-08-27 21:46:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:25,280 INFO L479 AbstractCegarLoop]: Abstraction has 828 states and 968 transitions. [2020-08-27 21:46:25,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 21:46:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 968 transitions. [2020-08-27 21:46:25,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-27 21:46:25,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:25,287 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, 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, 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] [2020-08-27 21:46:25,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:46:25,287 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:25,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:25,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1791991912, now seen corresponding path program 1 times [2020-08-27 21:46:25,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:25,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176483394] [2020-08-27 21:46:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,677 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:46:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:46:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:46:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-27 21:46:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:25,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:46:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:46:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:46:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-27 21:46:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:46:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:46:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:46:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-27 21:46:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-27 21:46:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-27 21:46:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-27 21:46:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-08-27 21:46:26,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176483394] [2020-08-27 21:46:26,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:46:26,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:46:26,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070725159] [2020-08-27 21:46:26,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:46:26,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:26,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:46:26,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:46:26,296 INFO L87 Difference]: Start difference. First operand 828 states and 968 transitions. Second operand 15 states. [2020-08-27 21:46:28,138 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:28,511 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:28,841 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:29,191 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:30,846 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:32,165 INFO L93 Difference]: Finished difference Result 2180 states and 2653 transitions. [2020-08-27 21:46:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-27 21:46:32,172 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 303 [2020-08-27 21:46:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:32,180 INFO L225 Difference]: With dead ends: 2180 [2020-08-27 21:46:32,180 INFO L226 Difference]: Without dead ends: 1293 [2020-08-27 21:46:32,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-27 21:46:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2020-08-27 21:46:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1090. [2020-08-27 21:46:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2020-08-27 21:46:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1305 transitions. [2020-08-27 21:46:32,408 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1305 transitions. Word has length 303 [2020-08-27 21:46:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:32,409 INFO L479 AbstractCegarLoop]: Abstraction has 1090 states and 1305 transitions. [2020-08-27 21:46:32,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-27 21:46:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1305 transitions. [2020-08-27 21:46:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-27 21:46:32,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:32,417 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, 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, 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] [2020-08-27 21:46:32,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:46:32,417 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:32,417 INFO L82 PathProgramCache]: Analyzing trace with hash -943069261, now seen corresponding path program 1 times [2020-08-27 21:46:32,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:32,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442186273] [2020-08-27 21:46:32,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,766 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:32,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:46:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:46:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:32,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:46:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-27 21:46:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:46:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:46:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:46:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:46:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-27 21:46:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:46:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:46:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:46:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:46:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-27 21:46:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-27 21:46:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-27 21:46:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 85 proven. 38 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-08-27 21:46:33,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442186273] [2020-08-27 21:46:33,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:46:33,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:46:33,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104211932] [2020-08-27 21:46:33,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:46:33,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:33,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:46:33,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:46:33,371 INFO L87 Difference]: Start difference. First operand 1090 states and 1305 transitions. Second operand 16 states. [2020-08-27 21:46:34,425 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189