/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=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:06:26,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:06:26,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:06:26,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:06:26,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:06:26,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:06:26,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:06:26,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:06:26,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:06:26,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:06:26,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:06:26,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:06:26,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:06:26,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:06:26,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:06:26,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:06:26,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:06:26,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:06:26,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:06:26,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:06:26,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:06:26,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:06:26,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:06:26,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:06:26,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:06:26,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:06:26,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:06:26,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:06:26,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:06:26,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:06:26,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:06:26,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:06:26,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:06:26,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:06:27,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:06:27,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:06:27,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:06:27,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:06:27,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:06:27,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:06:27,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:06:27,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:06:27,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:06:27,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:06:27,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:06:27,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:06:27,050 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:06:27,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:06:27,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:06:27,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:06:27,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:06:27,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:06:27,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:06:27,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:06:27,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:06:27,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:06:27,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:06:27,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:06:27,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:06:27,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:06:27,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:06:27,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:06:27,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:06:27,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:06:27,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:06:27,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:06:27,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:06:27,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:06:27,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:06:27,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:06:27,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:06:27,057 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:06:27,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:06:27,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:06:27,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:06:27,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:06:27,393 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:06:27,394 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-18 20:06:27,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2725d75d4/0d8fa921cd694941815d2aef4b7361b4/FLAGc52cd1510 [2020-08-18 20:06:27,966 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:06:27,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-18 20:06:27,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2725d75d4/0d8fa921cd694941815d2aef4b7361b4/FLAGc52cd1510 [2020-08-18 20:06:28,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2725d75d4/0d8fa921cd694941815d2aef4b7361b4 [2020-08-18 20:06:28,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:06:28,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:06:28,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:06:28,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:06:28,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:06:28,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:06:28" (1/1) ... [2020-08-18 20:06:28,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e57099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28, skipping insertion in model container [2020-08-18 20:06:28,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:06:28" (1/1) ... [2020-08-18 20:06:28,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:06:28,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:06:28,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:06:28,818 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:06:28,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:06:28,961 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:06:28,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28 WrapperNode [2020-08-18 20:06:28,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:06:28,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:06:28,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:06:28,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:06:28,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28" (1/1) ... [2020-08-18 20:06:28,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28" (1/1) ... [2020-08-18 20:06:28,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28" (1/1) ... [2020-08-18 20:06:28,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28" (1/1) ... [2020-08-18 20:06:29,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28" (1/1) ... [2020-08-18 20:06:29,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28" (1/1) ... [2020-08-18 20:06:29,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28" (1/1) ... [2020-08-18 20:06:29,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:06:29,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:06:29,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:06:29,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:06:29,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:06:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:06:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:06:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:06:29,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:06:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:06:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:06:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:06:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:06:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:06:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:06:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:06:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:06:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:06:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:06:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:06:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:06:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:06:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 20:06:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:06:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:06:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:06:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:06:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:06:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:06:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:06:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:06:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:06:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:06:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:06:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:06:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:06:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:06:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:06:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:06:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:06:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:06:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:06:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:06:29,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:06:29,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:06:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:06:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:06:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:06:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:06:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:06:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:06:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:06:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:06:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:06:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:06:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:06:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:06:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:06:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:06:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:06:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:06:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:06:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:06:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:06:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:06:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:06:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:06:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:06:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:06:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:06:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:06:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:06:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:06:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:06:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:06:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:06:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:06:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:06:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:06:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:06:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:06:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:06:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 20:06:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:06:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:06:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:06:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:06:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:06:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:06:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:06:30,276 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:06:30,277 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:06:30,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:06:30 BoogieIcfgContainer [2020-08-18 20:06:30,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:06:30,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:06:30,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:06:30,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:06:30,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:06:28" (1/3) ... [2020-08-18 20:06:30,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321fc6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:06:30, skipping insertion in model container [2020-08-18 20:06:30,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:28" (2/3) ... [2020-08-18 20:06:30,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321fc6bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:06:30, skipping insertion in model container [2020-08-18 20:06:30,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:06:30" (3/3) ... [2020-08-18 20:06:30,296 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2020-08-18 20:06:30,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:06:30,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:06:30,322 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:06:30,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:06:30,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:06:30,347 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:06:30,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:06:30,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:06:30,348 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:06:30,348 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:06:30,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:06:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-18 20:06:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:06:30,384 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:30,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:30,385 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:30,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:30,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1016037874, now seen corresponding path program 1 times [2020-08-18 20:06:30,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:30,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626223614] [2020-08-18 20:06:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:31,100 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:31,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:31,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:31,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:31,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:06:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:31,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:06:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:31,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626223614] [2020-08-18 20:06:31,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:31,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:06:31,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815596685] [2020-08-18 20:06:31,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:06:31,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:31,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:06:31,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:06:31,230 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-08-18 20:06:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:32,405 INFO L93 Difference]: Finished difference Result 302 states and 395 transitions. [2020-08-18 20:06:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:06:32,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 20:06:32,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:32,421 INFO L225 Difference]: With dead ends: 302 [2020-08-18 20:06:32,421 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 20:06:32,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:06:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 20:06:32,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2020-08-18 20:06:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-18 20:06:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-18 20:06:32,520 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 51 [2020-08-18 20:06:32,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:32,521 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-18 20:06:32,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:06:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-18 20:06:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:06:32,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:32,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:32,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:06:32,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:32,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:32,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2062541652, now seen corresponding path program 1 times [2020-08-18 20:06:32,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:32,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285228034] [2020-08-18 20:06:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:32,896 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:32,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:32,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:32,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:06:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:32,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:06:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:32,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285228034] [2020-08-18 20:06:32,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:32,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:06:32,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051987780] [2020-08-18 20:06:32,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:06:32,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:32,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:06:32,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:06:32,956 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 5 states. [2020-08-18 20:06:33,406 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:34,409 INFO L93 Difference]: Finished difference Result 247 states and 306 transitions. [2020-08-18 20:06:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:06:34,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 20:06:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:34,414 INFO L225 Difference]: With dead ends: 247 [2020-08-18 20:06:34,414 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 20:06:34,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:06:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 20:06:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-18 20:06:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 20:06:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-18 20:06:34,456 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 52 [2020-08-18 20:06:34,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:34,456 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-18 20:06:34,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:06:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-18 20:06:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 20:06:34,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:34,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:34,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:06:34,460 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:34,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1086390402, now seen corresponding path program 1 times [2020-08-18 20:06:34,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:34,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736673713] [2020-08-18 20:06:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:34,895 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:34,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:34,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:35,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:35,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:35,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:06:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:35,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:06:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:35,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736673713] [2020-08-18 20:06:35,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:35,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:06:35,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025095282] [2020-08-18 20:06:35,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:06:35,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:35,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:06:35,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:06:35,045 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 9 states. [2020-08-18 20:06:35,508 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:35,823 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:36,106 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:36,343 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:37,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:37,559 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2020-08-18 20:06:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:06:37,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 20:06:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:37,564 INFO L225 Difference]: With dead ends: 256 [2020-08-18 20:06:37,564 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 20:06:37,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:06:37,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 20:06:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-18 20:06:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 20:06:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-18 20:06:37,602 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 56 [2020-08-18 20:06:37,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:37,602 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-18 20:06:37,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:06:37,603 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-18 20:06:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 20:06:37,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:37,606 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] [2020-08-18 20:06:37,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:06:37,606 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:37,606 INFO L82 PathProgramCache]: Analyzing trace with hash -848651131, now seen corresponding path program 1 times [2020-08-18 20:06:37,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:37,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224150615] [2020-08-18 20:06:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,884 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:37,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:06:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:06:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:06:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:37,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224150615] [2020-08-18 20:06:37,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:37,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:06:37,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438693447] [2020-08-18 20:06:37,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:06:38,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:38,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:06:38,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:06:38,000 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 7 states. [2020-08-18 20:06:38,360 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:39,563 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:40,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:40,185 INFO L93 Difference]: Finished difference Result 355 states and 448 transitions. [2020-08-18 20:06:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:06:40,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-18 20:06:40,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:40,189 INFO L225 Difference]: With dead ends: 355 [2020-08-18 20:06:40,190 INFO L226 Difference]: Without dead ends: 257 [2020-08-18 20:06:40,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:06:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-08-18 20:06:40,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 211. [2020-08-18 20:06:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-18 20:06:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2020-08-18 20:06:40,243 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 69 [2020-08-18 20:06:40,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:40,244 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2020-08-18 20:06:40,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:06:40,244 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2020-08-18 20:06:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:06:40,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:40,247 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] [2020-08-18 20:06:40,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:06:40,248 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:40,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1442987939, now seen corresponding path program 1 times [2020-08-18 20:06:40,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:40,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246121511] [2020-08-18 20:06:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,524 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:40,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:06:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:06:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:06:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:06:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:40,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246121511] [2020-08-18 20:06:40,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:40,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:06:40,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744704974] [2020-08-18 20:06:40,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:06:40,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:40,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:06:40,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:06:40,655 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand 9 states. [2020-08-18 20:06:41,129 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:42,123 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:42,441 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:43,033 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:43,280 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:44,311 INFO L93 Difference]: Finished difference Result 624 states and 785 transitions. [2020-08-18 20:06:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 20:06:44,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 20:06:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:44,318 INFO L225 Difference]: With dead ends: 624 [2020-08-18 20:06:44,318 INFO L226 Difference]: Without dead ends: 441 [2020-08-18 20:06:44,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 20:06:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-18 20:06:44,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2020-08-18 20:06:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-08-18 20:06:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 426 transitions. [2020-08-18 20:06:44,447 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 426 transitions. Word has length 83 [2020-08-18 20:06:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:44,447 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 426 transitions. [2020-08-18 20:06:44,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:06:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 426 transitions. [2020-08-18 20:06:44,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 20:06:44,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:44,475 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] [2020-08-18 20:06:44,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:06:44,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash -142547263, now seen corresponding path program 1 times [2020-08-18 20:06:44,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:44,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829910465] [2020-08-18 20:06:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,788 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:44,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:06:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:06:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:06:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 20:06:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:06:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:44,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829910465] [2020-08-18 20:06:44,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:44,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:06:44,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199149038] [2020-08-18 20:06:44,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:06:44,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:44,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:06:44,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:06:44,940 INFO L87 Difference]: Start difference. First operand 370 states and 426 transitions. Second operand 10 states. [2020-08-18 20:06:45,347 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:46,554 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:47,515 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:47,749 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:48,022 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:48,422 INFO L93 Difference]: Finished difference Result 818 states and 1011 transitions. [2020-08-18 20:06:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:06:48,422 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-18 20:06:48,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:48,427 INFO L225 Difference]: With dead ends: 818 [2020-08-18 20:06:48,427 INFO L226 Difference]: Without dead ends: 476 [2020-08-18 20:06:48,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 20:06:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-18 20:06:48,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2020-08-18 20:06:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-18 20:06:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 423 transitions. [2020-08-18 20:06:48,497 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 423 transitions. Word has length 87 [2020-08-18 20:06:48,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:48,498 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 423 transitions. [2020-08-18 20:06:48,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:06:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 423 transitions. [2020-08-18 20:06:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 20:06:48,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:48,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:48,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:06:48,500 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1138633269, now seen corresponding path program 1 times [2020-08-18 20:06:48,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:48,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868876250] [2020-08-18 20:06:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,759 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:06:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:06:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:06:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 20:06:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:06:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:06:48,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868876250] [2020-08-18 20:06:48,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:48,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:06:48,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377143534] [2020-08-18 20:06:48,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:06:48,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:48,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:06:48,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:06:48,959 INFO L87 Difference]: Start difference. First operand 369 states and 423 transitions. Second operand 10 states. [2020-08-18 20:06:50,154 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:50,396 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:06:50,634 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:50,866 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:52,008 INFO L93 Difference]: Finished difference Result 825 states and 1040 transitions. [2020-08-18 20:06:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:06:52,009 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-18 20:06:52,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:52,013 INFO L225 Difference]: With dead ends: 825 [2020-08-18 20:06:52,013 INFO L226 Difference]: Without dead ends: 484 [2020-08-18 20:06:52,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:06:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-18 20:06:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 379. [2020-08-18 20:06:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 20:06:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 433 transitions. [2020-08-18 20:06:52,118 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 433 transitions. Word has length 103 [2020-08-18 20:06:52,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:52,118 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 433 transitions. [2020-08-18 20:06:52,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:06:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 433 transitions. [2020-08-18 20:06:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 20:06:52,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:52,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:52,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:06:52,121 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:52,122 INFO L82 PathProgramCache]: Analyzing trace with hash 789639433, now seen corresponding path program 1 times [2020-08-18 20:06:52,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:52,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774571830] [2020-08-18 20:06:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,383 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:06:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:06:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:06:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 20:06:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:06:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:06:52,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774571830] [2020-08-18 20:06:52,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:52,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:06:52,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049138082] [2020-08-18 20:06:52,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:06:52,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:52,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:06:52,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:06:52,551 INFO L87 Difference]: Start difference. First operand 379 states and 433 transitions. Second operand 12 states. [2020-08-18 20:06:53,081 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:53,335 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:53,578 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:54,249 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:54,507 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:54,758 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:55,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:55,868 INFO L93 Difference]: Finished difference Result 845 states and 1062 transitions. [2020-08-18 20:06:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:06:55,868 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-08-18 20:06:55,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:55,873 INFO L225 Difference]: With dead ends: 845 [2020-08-18 20:06:55,873 INFO L226 Difference]: Without dead ends: 494 [2020-08-18 20:06:55,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:06:55,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-08-18 20:06:55,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 387. [2020-08-18 20:06:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-18 20:06:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 441 transitions. [2020-08-18 20:06:55,950 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 441 transitions. Word has length 103 [2020-08-18 20:06:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:55,950 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 441 transitions. [2020-08-18 20:06:55,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:06:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 441 transitions. [2020-08-18 20:06:55,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 20:06:55,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:55,954 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:55,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:06:55,954 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash 549099304, now seen corresponding path program 1 times [2020-08-18 20:06:55,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:55,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011421369] [2020-08-18 20:06:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,278 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:56,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:06:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:06:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:06:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 20:06:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:06:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:06:56,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011421369] [2020-08-18 20:06:56,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:56,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:06:56,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312497432] [2020-08-18 20:06:56,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:06:56,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:06:56,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:06:56,526 INFO L87 Difference]: Start difference. First operand 387 states and 441 transitions. Second operand 8 states. [2020-08-18 20:06:56,910 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:57,436 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:59,605 INFO L93 Difference]: Finished difference Result 1164 states and 1513 transitions. [2020-08-18 20:06:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:06:59,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-08-18 20:06:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:59,611 INFO L225 Difference]: With dead ends: 1164 [2020-08-18 20:06:59,611 INFO L226 Difference]: Without dead ends: 805 [2020-08-18 20:06:59,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-18 20:06:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-08-18 20:06:59,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 673. [2020-08-18 20:06:59,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-08-18 20:06:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 795 transitions. [2020-08-18 20:06:59,747 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 795 transitions. Word has length 103 [2020-08-18 20:06:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:59,749 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 795 transitions. [2020-08-18 20:06:59,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:06:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 795 transitions. [2020-08-18 20:06:59,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 20:06:59,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:59,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:59,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:06:59,752 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:59,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:59,752 INFO L82 PathProgramCache]: Analyzing trace with hash 290063790, now seen corresponding path program 1 times [2020-08-18 20:06:59,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:59,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210602774] [2020-08-18 20:06:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,067 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:07:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 20:07:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 20:07:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:07:00,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210602774] [2020-08-18 20:07:00,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:07:00,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 20:07:00,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271296103] [2020-08-18 20:07:00,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 20:07:00,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:00,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 20:07:00,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:07:00,323 INFO L87 Difference]: Start difference. First operand 673 states and 795 transitions. Second operand 18 states. [2020-08-18 20:07:00,832 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:01,185 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:01,434 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:01,674 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:02,318 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:03,258 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:03,593 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:03,889 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:04,164 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:04,492 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:04,774 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:05,330 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 20:07:05,931 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 20:07:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:07,761 INFO L93 Difference]: Finished difference Result 1422 states and 1767 transitions. [2020-08-18 20:07:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-18 20:07:07,761 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-08-18 20:07:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:07,768 INFO L225 Difference]: With dead ends: 1422 [2020-08-18 20:07:07,768 INFO L226 Difference]: Without dead ends: 777 [2020-08-18 20:07:07,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 20:07:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-18 20:07:07,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 654. [2020-08-18 20:07:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-08-18 20:07:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 763 transitions. [2020-08-18 20:07:07,914 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 763 transitions. Word has length 107 [2020-08-18 20:07:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:07,915 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 763 transitions. [2020-08-18 20:07:07,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 20:07:07,915 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 763 transitions. [2020-08-18 20:07:07,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-18 20:07:07,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:07,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:07,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:07:07,919 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:07,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1933824326, now seen corresponding path program 1 times [2020-08-18 20:07:07,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:07,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055374219] [2020-08-18 20:07:07,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,213 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:07:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:07:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:07:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 20:07:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 20:07:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:07:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 20:07:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 20:07:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 20:07:08,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055374219] [2020-08-18 20:07:08,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:07:08,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 20:07:08,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534039749] [2020-08-18 20:07:08,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 20:07:08,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:08,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 20:07:08,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:07:08,535 INFO L87 Difference]: Start difference. First operand 654 states and 763 transitions. Second operand 19 states. [2020-08-18 20:07:09,037 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:09,360 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:09,618 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:09,898 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:10,628 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:11,688 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:12,058 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:12,359 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:12,668 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:13,031 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:13,330 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:14,706 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:14,964 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:15,252 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:15,507 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:16,468 INFO L93 Difference]: Finished difference Result 1213 states and 1509 transitions. [2020-08-18 20:07:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-18 20:07:16,469 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 158 [2020-08-18 20:07:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:16,470 INFO L225 Difference]: With dead ends: 1213 [2020-08-18 20:07:16,470 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:07:16,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 20:07:16,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:07:16,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:07:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:07:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:07:16,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2020-08-18 20:07:16,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:16,476 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:07:16,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 20:07:16,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:07:16,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:07:16,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:07:16,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:07:17,348 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-18 20:07:17,534 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-18 20:07:17,772 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-18 20:07:18,091 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-18 20:07:19,518 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-18 20:07:22,084 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-18 20:07:22,669 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 270 [2020-08-18 20:07:23,681 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-18 20:07:23,992 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 18 [2020-08-18 20:07:24,523 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 16 [2020-08-18 20:07:24,701 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-18 20:07:24,878 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25 [2020-08-18 20:07:25,045 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25 [2020-08-18 20:07:25,861 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 32 [2020-08-18 20:07:26,028 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 1 [2020-08-18 20:07:26,231 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 19 [2020-08-18 20:07:26,973 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 25 [2020-08-18 20:07:27,176 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 22