/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:08:19,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:08:19,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:08:19,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:08:19,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:08:19,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:08:20,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:08:20,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:08:20,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:08:20,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:08:20,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:08:20,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:08:20,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:08:20,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:08:20,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:08:20,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:08:20,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:08:20,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:08:20,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:08:20,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:08:20,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:08:20,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:08:20,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:08:20,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:08:20,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:08:20,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:08:20,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:08:20,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:08:20,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:08:20,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:08:20,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:08:20,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:08:20,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:08:20,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:08:20,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:08:20,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:08:20,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:08:20,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:08:20,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:08:20,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:08:20,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:08:20,036 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 [2020-08-19 00:08:20,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:08:20,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:08:20,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:08:20,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:08:20,062 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:08:20,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:08:20,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:08:20,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:08:20,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:08:20,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:08:20,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:08:20,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:08:20,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:08:20,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:08:20,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:08:20,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:08:20,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:08:20,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:08:20,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:08:20,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:08:20,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:08:20,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:08:20,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:08:20,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:08:20,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:08:20,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:08:20,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:08:20,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:08:20,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:08:20,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:08:20,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:08:20,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:08:20,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:08:20,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:08:20,392 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:08:20,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-19 00:08:20,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2070eeaa8/e886698cecfb4debbe9d634ef5b571a2/FLAGdbbdc898a [2020-08-19 00:08:21,014 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:08:21,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-19 00:08:21,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2070eeaa8/e886698cecfb4debbe9d634ef5b571a2/FLAGdbbdc898a [2020-08-19 00:08:21,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2070eeaa8/e886698cecfb4debbe9d634ef5b571a2 [2020-08-19 00:08:21,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:08:21,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:08:21,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:08:21,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:08:21,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:08:21,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:08:21" (1/1) ... [2020-08-19 00:08:21,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42daed0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21, skipping insertion in model container [2020-08-19 00:08:21,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:08:21" (1/1) ... [2020-08-19 00:08:21,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:08:21,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:08:21,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:08:21,737 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:08:21,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:08:21,964 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:08:21,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21 WrapperNode [2020-08-19 00:08:21,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:08:21,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:08:21,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:08:21,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:08:21,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21" (1/1) ... [2020-08-19 00:08:21,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21" (1/1) ... [2020-08-19 00:08:21,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21" (1/1) ... [2020-08-19 00:08:22,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21" (1/1) ... [2020-08-19 00:08:22,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21" (1/1) ... [2020-08-19 00:08:22,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21" (1/1) ... [2020-08-19 00:08:22,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21" (1/1) ... [2020-08-19 00:08:22,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:08:22,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:08:22,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:08:22,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:08:22,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21" (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 [2020-08-19 00:08:22,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:08:22,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:08:22,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:08:22,128 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:08:22,128 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:08:22,128 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:08:22,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:08:22,128 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:08:22,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:08:22,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:08:22,129 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:08:22,129 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:08:22,129 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:08:22,129 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:08:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:08:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:08:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:08:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:08:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:08:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:08:22,130 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:08:22,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:08:22,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:08:22,131 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:08:22,131 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:08:22,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:08:22,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:08:22,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:08:22,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:08:22,132 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:08:22,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:08:22,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:08:22,132 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:08:22,133 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:08:22,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:08:22,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:08:22,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:08:22,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:08:22,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:08:22,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:08:22,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:08:22,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:08:22,134 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:08:22,134 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:08:22,134 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:08:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:08:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:08:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:08:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:08:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:08:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:08:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:08:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:08:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:08:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:08:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:08:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:08:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:08:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:08:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:08:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:08:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:08:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:08:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:08:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:08:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:08:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:08:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:08:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:08:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:08:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:08:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:08:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:08:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:08:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:08:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:08:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:08:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:08:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:08:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:08:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:08:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:08:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:08:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:08:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:08:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:08:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:08:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:08:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:08:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:08:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:08:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:08:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:08:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:08:23,205 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:08:23,206 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:08:23,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:08:23 BoogieIcfgContainer [2020-08-19 00:08:23,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:08:23,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:08:23,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:08:23,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:08:23,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:08:21" (1/3) ... [2020-08-19 00:08:23,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:08:23, skipping insertion in model container [2020-08-19 00:08:23,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:08:21" (2/3) ... [2020-08-19 00:08:23,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:08:23, skipping insertion in model container [2020-08-19 00:08:23,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:08:23" (3/3) ... [2020-08-19 00:08:23,220 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-08-19 00:08:23,231 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:08:23,239 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:08:23,254 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:08:23,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:08:23,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:08:23,276 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:08:23,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:08:23,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:08:23,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:08:23,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:08:23,277 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:08:23,300 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-19 00:08:23,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:08:23,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:23,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:23,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash 652232891, now seen corresponding path program 1 times [2020-08-19 00:08:23,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:23,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953217199] [2020-08-19 00:08:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,001 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:24,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:08:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:08:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:24,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953217199] [2020-08-19 00:08:24,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:24,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:08:24,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653048542] [2020-08-19 00:08:24,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:08:24,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:24,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:08:24,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:08:24,135 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2020-08-19 00:08:25,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:25,327 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2020-08-19 00:08:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:08:25,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:08:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:25,345 INFO L225 Difference]: With dead ends: 301 [2020-08-19 00:08:25,345 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 00:08:25,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:08:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 00:08:25,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-19 00:08:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-19 00:08:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2020-08-19 00:08:25,447 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 51 [2020-08-19 00:08:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:25,448 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2020-08-19 00:08:25,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:08:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2020-08-19 00:08:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:08:25,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:25,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:25,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:08:25,453 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:25,454 INFO L82 PathProgramCache]: Analyzing trace with hash -564528421, now seen corresponding path program 1 times [2020-08-19 00:08:25,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:25,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613808232] [2020-08-19 00:08:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,788 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:08:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:08:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:25,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613808232] [2020-08-19 00:08:25,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:25,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:08:25,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472726822] [2020-08-19 00:08:25,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:08:25,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:25,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:08:25,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:08:25,846 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 5 states. [2020-08-19 00:08:26,299 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:27,285 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-08-19 00:08:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:08:27,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:08:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:27,289 INFO L225 Difference]: With dead ends: 240 [2020-08-19 00:08:27,289 INFO L226 Difference]: Without dead ends: 158 [2020-08-19 00:08:27,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:08:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-19 00:08:27,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2020-08-19 00:08:27,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-19 00:08:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2020-08-19 00:08:27,346 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 52 [2020-08-19 00:08:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:27,347 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2020-08-19 00:08:27,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:08:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2020-08-19 00:08:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 00:08:27,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:27,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:27,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:08:27,357 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:27,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1211879035, now seen corresponding path program 1 times [2020-08-19 00:08:27,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:27,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714402036] [2020-08-19 00:08:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:27,750 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:27,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:27,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:27,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:27,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:27,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:27,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:08:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:27,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:08:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:27,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714402036] [2020-08-19 00:08:27,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:27,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:08:27,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985912139] [2020-08-19 00:08:27,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:08:27,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:27,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:08:27,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:08:27,873 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 9 states. [2020-08-19 00:08:28,190 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:28,478 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:28,741 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:28,971 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:29,761 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:31,582 INFO L93 Difference]: Finished difference Result 423 states and 537 transitions. [2020-08-19 00:08:31,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:08:31,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 00:08:31,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:31,589 INFO L225 Difference]: With dead ends: 423 [2020-08-19 00:08:31,589 INFO L226 Difference]: Without dead ends: 326 [2020-08-19 00:08:31,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:08:31,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-19 00:08:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-08-19 00:08:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-19 00:08:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-19 00:08:31,665 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2020-08-19 00:08:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:31,665 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-19 00:08:31,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:08:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-19 00:08:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 00:08:31,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:31,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:31,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:08:31,668 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:31,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:31,668 INFO L82 PathProgramCache]: Analyzing trace with hash -773448372, now seen corresponding path program 1 times [2020-08-19 00:08:31,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:31,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458746835] [2020-08-19 00:08:31,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,931 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:08:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:08:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:32,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:08:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:32,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458746835] [2020-08-19 00:08:32,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:32,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:08:32,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375904297] [2020-08-19 00:08:32,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:08:32,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:32,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:08:32,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:08:32,049 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 9 states. [2020-08-19 00:08:32,416 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:33,447 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:33,826 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:34,198 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:34,511 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:35,760 INFO L93 Difference]: Finished difference Result 845 states and 1123 transitions. [2020-08-19 00:08:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:08:35,761 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 00:08:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:35,767 INFO L225 Difference]: With dead ends: 845 [2020-08-19 00:08:35,767 INFO L226 Difference]: Without dead ends: 608 [2020-08-19 00:08:35,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:08:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-08-19 00:08:35,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 478. [2020-08-19 00:08:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-19 00:08:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2020-08-19 00:08:35,890 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 62 [2020-08-19 00:08:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:35,891 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2020-08-19 00:08:35,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:08:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2020-08-19 00:08:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 00:08:35,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:35,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:35,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:08:35,894 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:35,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:35,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1032831448, now seen corresponding path program 1 times [2020-08-19 00:08:35,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:35,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685382125] [2020-08-19 00:08:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,173 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:08:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:08:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 00:08:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:36,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685382125] [2020-08-19 00:08:36,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:36,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:08:36,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738685115] [2020-08-19 00:08:36,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:08:36,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:36,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:08:36,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:08:36,292 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand 10 states. [2020-08-19 00:08:36,669 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:37,715 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:37,994 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:38,238 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:38,875 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:40,029 INFO L93 Difference]: Finished difference Result 1339 states and 1842 transitions. [2020-08-19 00:08:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 00:08:40,034 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 00:08:40,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:40,041 INFO L225 Difference]: With dead ends: 1339 [2020-08-19 00:08:40,042 INFO L226 Difference]: Without dead ends: 889 [2020-08-19 00:08:40,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:08:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-19 00:08:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 693. [2020-08-19 00:08:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-08-19 00:08:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 847 transitions. [2020-08-19 00:08:40,207 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 847 transitions. Word has length 66 [2020-08-19 00:08:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:40,207 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 847 transitions. [2020-08-19 00:08:40,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:08:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 847 transitions. [2020-08-19 00:08:40,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:08:40,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:40,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:40,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:08:40,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:40,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:40,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1961211398, now seen corresponding path program 1 times [2020-08-19 00:08:40,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:40,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873734347] [2020-08-19 00:08:40,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,499 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:40,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:08:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:08:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:08:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:40,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873734347] [2020-08-19 00:08:40,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:40,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:08:40,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763653225] [2020-08-19 00:08:40,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:08:40,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:40,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:08:40,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:08:40,723 INFO L87 Difference]: Start difference. First operand 693 states and 847 transitions. Second operand 10 states. [2020-08-19 00:08:41,182 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:42,175 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:42,415 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:08:42,724 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:42,988 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:44,945 INFO L93 Difference]: Finished difference Result 2350 states and 3369 transitions. [2020-08-19 00:08:44,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 00:08:44,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 00:08:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:44,962 INFO L225 Difference]: With dead ends: 2350 [2020-08-19 00:08:44,962 INFO L226 Difference]: Without dead ends: 1685 [2020-08-19 00:08:44,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-19 00:08:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-19 00:08:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1247. [2020-08-19 00:08:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-19 00:08:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1522 transitions. [2020-08-19 00:08:45,302 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1522 transitions. Word has length 88 [2020-08-19 00:08:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:45,303 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1522 transitions. [2020-08-19 00:08:45,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:08:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1522 transitions. [2020-08-19 00:08:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:08:45,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:45,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:45,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:08:45,309 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:45,310 INFO L82 PathProgramCache]: Analyzing trace with hash 608275001, now seen corresponding path program 1 times [2020-08-19 00:08:45,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:45,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511956590] [2020-08-19 00:08:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,633 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:08:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:08:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:08:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:45,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511956590] [2020-08-19 00:08:45,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:45,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:08:45,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546408291] [2020-08-19 00:08:45,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:08:45,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:45,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:08:45,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:08:45,798 INFO L87 Difference]: Start difference. First operand 1247 states and 1522 transitions. Second operand 10 states. [2020-08-19 00:08:46,963 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:47,228 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:08:47,512 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:47,759 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:49,028 INFO L93 Difference]: Finished difference Result 2904 states and 3892 transitions. [2020-08-19 00:08:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:08:49,029 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 00:08:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:49,039 INFO L225 Difference]: With dead ends: 2904 [2020-08-19 00:08:49,039 INFO L226 Difference]: Without dead ends: 1685 [2020-08-19 00:08:49,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:08:49,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-19 00:08:49,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1287. [2020-08-19 00:08:49,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2020-08-19 00:08:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1562 transitions. [2020-08-19 00:08:49,304 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1562 transitions. Word has length 88 [2020-08-19 00:08:49,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:49,305 INFO L479 AbstractCegarLoop]: Abstraction has 1287 states and 1562 transitions. [2020-08-19 00:08:49,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:08:49,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1562 transitions. [2020-08-19 00:08:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:08:49,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:49,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:49,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:08:49,308 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:49,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:49,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1309874875, now seen corresponding path program 1 times [2020-08-19 00:08:49,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:49,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257996783] [2020-08-19 00:08:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,581 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:49,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:08:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:08:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:08:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:08:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:49,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257996783] [2020-08-19 00:08:49,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:49,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:08:49,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751612796] [2020-08-19 00:08:49,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:08:49,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:49,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:08:49,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:08:49,764 INFO L87 Difference]: Start difference. First operand 1287 states and 1562 transitions. Second operand 12 states. [2020-08-19 00:08:50,253 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:08:50,491 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:50,723 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:51,532 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:51,811 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:52,059 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:08:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:53,476 INFO L93 Difference]: Finished difference Result 2600 states and 3450 transitions. [2020-08-19 00:08:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:08:53,476 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-19 00:08:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:53,486 INFO L225 Difference]: With dead ends: 2600 [2020-08-19 00:08:53,486 INFO L226 Difference]: Without dead ends: 1341 [2020-08-19 00:08:53,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:08:53,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-08-19 00:08:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1063. [2020-08-19 00:08:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-08-19 00:08:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1258 transitions. [2020-08-19 00:08:53,734 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1258 transitions. Word has length 88 [2020-08-19 00:08:53,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:53,735 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1258 transitions. [2020-08-19 00:08:53,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:08:53,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1258 transitions. [2020-08-19 00:08:53,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 00:08:53,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:53,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:53,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:08:53,738 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:53,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1814435734, now seen corresponding path program 1 times [2020-08-19 00:08:53,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:53,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174114485] [2020-08-19 00:08:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:53,992 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:53,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:08:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:08:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:08:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 00:08:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 00:08:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:08:54,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174114485] [2020-08-19 00:08:54,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:08:54,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:08:54,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031679203] [2020-08-19 00:08:54,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:08:54,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:08:54,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:08:54,099 INFO L87 Difference]: Start difference. First operand 1063 states and 1258 transitions. Second operand 8 states. [2020-08-19 00:08:54,472 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:08:57,185 INFO L93 Difference]: Finished difference Result 2130 states and 2835 transitions. [2020-08-19 00:08:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 00:08:57,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-19 00:08:57,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:08:57,199 INFO L225 Difference]: With dead ends: 2130 [2020-08-19 00:08:57,199 INFO L226 Difference]: Without dead ends: 2127 [2020-08-19 00:08:57,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:08:57,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-08-19 00:08:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1652. [2020-08-19 00:08:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-08-19 00:08:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1981 transitions. [2020-08-19 00:08:57,572 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1981 transitions. Word has length 92 [2020-08-19 00:08:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:08:57,573 INFO L479 AbstractCegarLoop]: Abstraction has 1652 states and 1981 transitions. [2020-08-19 00:08:57,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:08:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1981 transitions. [2020-08-19 00:08:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 00:08:57,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:08:57,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:08:57,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:08:57,584 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:08:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:08:57,584 INFO L82 PathProgramCache]: Analyzing trace with hash -374585462, now seen corresponding path program 1 times [2020-08-19 00:08:57,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:08:57,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954219881] [2020-08-19 00:08:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:08:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,890 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:08:57,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:08:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:08:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:08:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:08:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:08:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:08:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:08:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:08:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:08:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:08:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:08:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:08:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 00:08:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 00:08:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:08:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:08:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:08:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 00:08:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 00:08:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:08:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 00:08:58,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954219881] [2020-08-19 00:08:58,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:08:58,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 00:08:58,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506759588] [2020-08-19 00:08:58,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 00:08:58,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:08:58,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 00:08:58,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:08:58,274 INFO L87 Difference]: Start difference. First operand 1652 states and 1981 transitions. Second operand 19 states. [2020-08-19 00:08:58,860 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:08:59,214 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:08:59,483 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:08:59,727 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:09:00,462 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:01,067 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:01,491 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:03,841 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:04,084 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:04,402 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:04,671 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:04,915 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:05,163 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:05,452 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:05,696 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:06,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:06,650 INFO L93 Difference]: Finished difference Result 3563 states and 4503 transitions. [2020-08-19 00:09:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-19 00:09:06,650 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-19 00:09:06,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:06,662 INFO L225 Difference]: With dead ends: 3563 [2020-08-19 00:09:06,662 INFO L226 Difference]: Without dead ends: 1939 [2020-08-19 00:09:06,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-19 00:09:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-08-19 00:09:07,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1598. [2020-08-19 00:09:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-08-19 00:09:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1879 transitions. [2020-08-19 00:09:07,034 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1879 transitions. Word has length 150 [2020-08-19 00:09:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:07,035 INFO L479 AbstractCegarLoop]: Abstraction has 1598 states and 1879 transitions. [2020-08-19 00:09:07,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 00:09:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1879 transitions. [2020-08-19 00:09:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 00:09:07,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:07,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:07,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:09:07,049 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:07,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:07,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1053600099, now seen corresponding path program 1 times [2020-08-19 00:09:07,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:07,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144730459] [2020-08-19 00:09:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,389 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:07,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:09:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:09:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:09:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:09:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:09:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 00:09:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 00:09:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 00:09:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 00:09:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-19 00:09:07,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144730459] [2020-08-19 00:09:07,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:09:07,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 00:09:07,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730011498] [2020-08-19 00:09:07,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 00:09:07,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:07,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 00:09:07,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:09:07,715 INFO L87 Difference]: Start difference. First operand 1598 states and 1879 transitions. Second operand 14 states. [2020-08-19 00:09:08,629 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:09:08,983 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:09,208 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:09:09,752 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:11,133 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:12,888 INFO L93 Difference]: Finished difference Result 2988 states and 3684 transitions. [2020-08-19 00:09:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-19 00:09:12,889 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2020-08-19 00:09:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:12,899 INFO L225 Difference]: With dead ends: 2988 [2020-08-19 00:09:12,899 INFO L226 Difference]: Without dead ends: 1734 [2020-08-19 00:09:12,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 00:09:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-08-19 00:09:13,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1482. [2020-08-19 00:09:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-19 00:09:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1650 transitions. [2020-08-19 00:09:13,167 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1650 transitions. Word has length 154 [2020-08-19 00:09:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:13,168 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1650 transitions. [2020-08-19 00:09:13,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 00:09:13,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1650 transitions. [2020-08-19 00:09:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-19 00:09:13,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:09:13,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:09:13,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:09:13,175 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:09:13,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:09:13,175 INFO L82 PathProgramCache]: Analyzing trace with hash -2018968461, now seen corresponding path program 1 times [2020-08-19 00:09:13,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:09:13,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512161125] [2020-08-19 00:09:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:09:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,422 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:09:13,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:09:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:09:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:09:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:09:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:09:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:09:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:09:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:09:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:09:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:09:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:09:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 00:09:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 00:09:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:09:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:09:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:09:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 00:09:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 00:09:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:09:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-19 00:09:13,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512161125] [2020-08-19 00:09:13,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:09:13,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 00:09:13,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912211898] [2020-08-19 00:09:13,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:09:13,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:09:13,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:09:13,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:09:13,657 INFO L87 Difference]: Start difference. First operand 1482 states and 1650 transitions. Second operand 10 states. [2020-08-19 00:09:14,640 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:09:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:09:16,342 INFO L93 Difference]: Finished difference Result 1918 states and 2270 transitions. [2020-08-19 00:09:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 00:09:16,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-08-19 00:09:16,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:09:16,344 INFO L225 Difference]: With dead ends: 1918 [2020-08-19 00:09:16,344 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:09:16,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 00:09:16,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:09:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:09:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:09:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:09:16,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-19 00:09:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:09:16,352 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:09:16,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:09:16,352 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:09:16,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:09:16,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 00:09:16,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.