/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:04:23,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:04:23,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:04:23,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:04:23,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:04:23,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:04:23,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:04:23,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:04:23,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:04:23,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:04:23,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:04:23,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:04:23,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:04:23,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:04:23,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:04:23,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:04:23,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:04:23,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:04:23,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:04:23,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:04:23,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:04:23,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:04:23,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:04:23,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:04:23,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:04:23,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:04:23,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:04:23,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:04:23,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:04:23,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:04:23,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:04:23,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:04:23,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:04:23,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:04:23,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:04:23,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:04:23,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:04:23,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:04:23,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:04:23,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:04:23,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:04:23,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:04:23,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:04:23,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:04:23,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:04:23,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:04:23,130 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:04:23,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:04:23,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:04:23,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:04:23,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:04:23,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:04:23,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:04:23,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:04:23,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:04:23,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:04:23,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:04:23,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:04:23,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:04:23,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:04:23,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:04:23,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:04:23,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:04:23,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:04:23,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:04:23,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:04:23,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:04:23,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:04:23,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:04:23,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:04:23,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:04:23,135 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=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:04:23,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:04:23,462 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:04:23,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:04:23,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:04:23,472 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:04:23,473 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-19 05:04:23,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08ef1d72a/abce918aa1ee4df480e17e3dd1460677/FLAG1d6f8e43e [2020-08-19 05:04:24,049 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:04:24,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-19 05:04:24,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08ef1d72a/abce918aa1ee4df480e17e3dd1460677/FLAG1d6f8e43e [2020-08-19 05:04:24,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08ef1d72a/abce918aa1ee4df480e17e3dd1460677 [2020-08-19 05:04:24,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:04:24,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:04:24,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:04:24,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:04:24,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:04:24,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:04:24" (1/1) ... [2020-08-19 05:04:24,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0619bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:24, skipping insertion in model container [2020-08-19 05:04:24,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:04:24" (1/1) ... [2020-08-19 05:04:24,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:04:24,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:04:24,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:04:24,891 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:04:24,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:04:25,028 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:04:25,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25 WrapperNode [2020-08-19 05:04:25,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:04:25,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:04:25,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:04:25,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:04:25,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25" (1/1) ... [2020-08-19 05:04:25,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25" (1/1) ... [2020-08-19 05:04:25,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25" (1/1) ... [2020-08-19 05:04:25,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25" (1/1) ... [2020-08-19 05:04:25,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25" (1/1) ... [2020-08-19 05:04:25,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25" (1/1) ... [2020-08-19 05:04:25,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25" (1/1) ... [2020-08-19 05:04:25,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:04:25,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:04:25,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:04:25,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:04:25,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:04:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:04:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:04:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:04:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:04:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:04:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:04:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:04:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:04:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:04:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 05:04:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:04:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:04:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:04:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:04:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:04:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:04:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:04:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:04:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:04:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:04:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:04:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:04:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:04:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:04:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:04:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:04:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:04:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:04:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:04:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:04:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:04:25,251 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:04:25,251 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:04:25,251 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:04:25,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:04:25,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:04:25,251 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:04:25,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:04:25,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:04:25,252 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 05:04:25,252 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:04:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:04:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:04:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:04:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:04:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:04:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:04:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:04:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:04:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:04:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:04:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:04:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:04:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:04:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:04:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:04:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:04:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:04:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:04:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:04:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:04:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:04:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:04:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:04:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 05:04:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:04:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:04:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:04:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:04:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:04:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:04:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:04:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:04:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:04:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:04:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:04:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:04:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:04:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:04:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:04:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:04:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:04:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:04:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:04:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:04:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:04:25,258 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 05:04:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:04:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:04:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:04:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:04:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:04:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:04:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:04:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:04:25,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:04:26,326 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:04:26,326 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:04:26,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:04:26 BoogieIcfgContainer [2020-08-19 05:04:26,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:04:26,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:04:26,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:04:26,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:04:26,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:04:24" (1/3) ... [2020-08-19 05:04:26,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b39db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:04:26, skipping insertion in model container [2020-08-19 05:04:26,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:25" (2/3) ... [2020-08-19 05:04:26,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b39db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:04:26, skipping insertion in model container [2020-08-19 05:04:26,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:04:26" (3/3) ... [2020-08-19 05:04:26,340 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-08-19 05:04:26,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:04:26,359 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:04:26,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:04:26,398 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:04:26,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:04:26,399 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:04:26,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:04:26,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:04:26,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:04:26,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:04:26,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:04:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-19 05:04:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 05:04:26,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:26,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:26,435 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:26,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:26,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-08-19 05:04:26,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:26,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893773338] [2020-08-19 05:04:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,121 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:27,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:04:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:04:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:27,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893773338] [2020-08-19 05:04:27,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:27,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:04:27,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624918385] [2020-08-19 05:04:27,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:04:27,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:27,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:04:27,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:04:27,298 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-19 05:04:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:28,398 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-19 05:04:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:04:28,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 05:04:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:28,423 INFO L225 Difference]: With dead ends: 306 [2020-08-19 05:04:28,423 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 05:04:28,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:04:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 05:04:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-19 05:04:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 05:04:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-19 05:04:28,536 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-19 05:04:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:28,536 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-19 05:04:28,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:04:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-19 05:04:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 05:04:28,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:28,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:28,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:04:28,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:28,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:28,543 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-08-19 05:04:28,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:28,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437735425] [2020-08-19 05:04:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:28,881 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:28,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:28,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:28,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:04:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:04:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:28,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437735425] [2020-08-19 05:04:28,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:28,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:04:28,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397902485] [2020-08-19 05:04:28,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:04:28,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:28,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:04:28,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:04:28,924 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-19 05:04:29,300 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:30,067 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-19 05:04:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:04:30,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 05:04:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:30,070 INFO L225 Difference]: With dead ends: 235 [2020-08-19 05:04:30,073 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 05:04:30,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:04:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 05:04:30,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-19 05:04:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 05:04:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-19 05:04:30,128 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-19 05:04:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:30,128 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-19 05:04:30,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:04:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-19 05:04:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:04:30,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:30,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:30,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:04:30,138 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:30,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:30,138 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-08-19 05:04:30,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:30,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509854171] [2020-08-19 05:04:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:30,483 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:30,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:30,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:30,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:30,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:04:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:30,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:04:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:30,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509854171] [2020-08-19 05:04:30,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:30,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:04:30,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343719262] [2020-08-19 05:04:30,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:04:30,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:30,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:04:30,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:04:30,600 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-19 05:04:30,947 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:31,233 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:31,525 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:31,750 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:32,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:32,932 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-19 05:04:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:04:32,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 05:04:32,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:32,936 INFO L225 Difference]: With dead ends: 248 [2020-08-19 05:04:32,936 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 05:04:32,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 05:04:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-19 05:04:32,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 05:04:32,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-19 05:04:32,970 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-19 05:04:32,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:32,971 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-19 05:04:32,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:04:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-19 05:04:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 05:04:32,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:32,973 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] [2020-08-19 05:04:32,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:04:32,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:32,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:32,974 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-08-19 05:04:32,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:32,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311203409] [2020-08-19 05:04:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,252 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:33,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:04:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 05:04:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:33,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311203409] [2020-08-19 05:04:33,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:33,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:04:33,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555655793] [2020-08-19 05:04:33,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:04:33,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:33,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:04:33,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:04:33,337 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-19 05:04:33,658 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:34,810 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:35,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:35,483 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-19 05:04:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:04:35,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-19 05:04:35,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:35,491 INFO L225 Difference]: With dead ends: 345 [2020-08-19 05:04:35,491 INFO L226 Difference]: Without dead ends: 246 [2020-08-19 05:04:35,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:04:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-19 05:04:35,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-19 05:04:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-19 05:04:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-19 05:04:35,560 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-19 05:04:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:35,561 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-19 05:04:35,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:04:35,561 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-19 05:04:35,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 05:04:35,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:35,562 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] [2020-08-19 05:04:35,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:04:35,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:35,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:35,563 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-08-19 05:04:35,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:35,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232366973] [2020-08-19 05:04:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,872 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:35,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:35,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 05:04:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 05:04:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:36,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232366973] [2020-08-19 05:04:36,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:36,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:04:36,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594138132] [2020-08-19 05:04:36,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:04:36,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:36,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:04:36,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:36,034 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 12 states. [2020-08-19 05:04:36,479 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:36,843 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:37,093 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:37,341 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:37,875 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:38,808 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:39,116 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:39,363 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:39,623 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:39,923 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:40,183 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:41,554 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:41,881 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:42,476 INFO L93 Difference]: Finished difference Result 713 states and 919 transitions. [2020-08-19 05:04:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:04:42,477 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-19 05:04:42,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:42,484 INFO L225 Difference]: With dead ends: 713 [2020-08-19 05:04:42,485 INFO L226 Difference]: Without dead ends: 534 [2020-08-19 05:04:42,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 05:04:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-19 05:04:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 472. [2020-08-19 05:04:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-08-19 05:04:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 553 transitions. [2020-08-19 05:04:42,597 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 553 transitions. Word has length 79 [2020-08-19 05:04:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:42,597 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 553 transitions. [2020-08-19 05:04:42,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:04:42,598 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 553 transitions. [2020-08-19 05:04:42,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-19 05:04:42,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:42,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:42,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:04:42,602 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:42,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:42,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1327678130, now seen corresponding path program 1 times [2020-08-19 05:04:42,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:42,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789771869] [2020-08-19 05:04:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:42,881 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:42,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:42,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:42,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:04:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 05:04:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 05:04:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 05:04:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 05:04:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 05:04:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 05:04:43,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789771869] [2020-08-19 05:04:43,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:43,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:04:43,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14277689] [2020-08-19 05:04:43,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:04:43,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:43,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:04:43,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:04:43,167 INFO L87 Difference]: Start difference. First operand 472 states and 553 transitions. Second operand 13 states. [2020-08-19 05:04:43,577 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:44,211 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:44,802 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:45,101 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 05:04:45,413 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:45,659 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:45,893 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:46,160 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 05:04:46,446 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:46,728 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:48,175 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:48,413 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:04:48,670 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:48,930 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:49,379 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2020-08-19 05:04:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 05:04:49,380 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-08-19 05:04:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:49,386 INFO L225 Difference]: With dead ends: 957 [2020-08-19 05:04:49,387 INFO L226 Difference]: Without dead ends: 509 [2020-08-19 05:04:49,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 05:04:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-19 05:04:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 442. [2020-08-19 05:04:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-19 05:04:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-08-19 05:04:49,497 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 138 [2020-08-19 05:04:49,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:49,497 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-08-19 05:04:49,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:04:49,498 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-08-19 05:04:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 05:04:49,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:49,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:49,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:04:49,503 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:49,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-08-19 05:04:49,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:49,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741936910] [2020-08-19 05:04:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,773 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:49,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:04:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 05:04:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 05:04:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 05:04:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 05:04:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 05:04:49,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741936910] [2020-08-19 05:04:49,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:49,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:04:49,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78964930] [2020-08-19 05:04:49,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:04:49,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:49,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:04:49,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:49,968 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 12 states. [2020-08-19 05:04:50,629 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:50,887 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:51,107 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:51,673 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:51,910 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:52,133 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:53,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:53,012 INFO L93 Difference]: Finished difference Result 807 states and 985 transitions. [2020-08-19 05:04:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:04:53,015 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-19 05:04:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:53,018 INFO L225 Difference]: With dead ends: 807 [2020-08-19 05:04:53,018 INFO L226 Difference]: Without dead ends: 389 [2020-08-19 05:04:53,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:04:53,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-19 05:04:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2020-08-19 05:04:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-19 05:04:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2020-08-19 05:04:53,106 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 130 [2020-08-19 05:04:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:53,107 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2020-08-19 05:04:53,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:04:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2020-08-19 05:04:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 05:04:53,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:53,114 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:53,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:04:53,114 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:53,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:53,114 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-08-19 05:04:53,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:53,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449016033] [2020-08-19 05:04:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,374 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:53,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:04:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 05:04:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 05:04:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 05:04:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 05:04:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 05:04:53,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449016033] [2020-08-19 05:04:53,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:53,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:04:53,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41090553] [2020-08-19 05:04:53,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:04:53,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:53,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:04:53,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:04:53,555 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand 10 states. [2020-08-19 05:04:55,031 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:55,280 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:55,489 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:55,731 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:56,047 INFO L93 Difference]: Finished difference Result 670 states and 812 transitions. [2020-08-19 05:04:56,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:04:56,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-19 05:04:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:56,051 INFO L225 Difference]: With dead ends: 670 [2020-08-19 05:04:56,051 INFO L226 Difference]: Without dead ends: 394 [2020-08-19 05:04:56,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:04:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-19 05:04:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 368. [2020-08-19 05:04:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-19 05:04:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 430 transitions. [2020-08-19 05:04:56,123 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 430 transitions. Word has length 134 [2020-08-19 05:04:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:56,124 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 430 transitions. [2020-08-19 05:04:56,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:04:56,124 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 430 transitions. [2020-08-19 05:04:56,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 05:04:56,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:56,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:56,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:04:56,127 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:56,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:56,127 INFO L82 PathProgramCache]: Analyzing trace with hash -475265005, now seen corresponding path program 1 times [2020-08-19 05:04:56,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:56,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811571325] [2020-08-19 05:04:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,404 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:56,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:04:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 05:04:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 05:04:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 05:04:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 05:04:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 05:04:56,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811571325] [2020-08-19 05:04:56,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:56,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:04:56,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026456956] [2020-08-19 05:04:56,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:04:56,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:56,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:04:56,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:04:56,583 INFO L87 Difference]: Start difference. First operand 368 states and 430 transitions. Second operand 10 states. [2020-08-19 05:04:56,980 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:58,528 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:58,795 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:59,034 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:59,279 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:59,581 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:59,914 INFO L93 Difference]: Finished difference Result 401 states and 482 transitions. [2020-08-19 05:04:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:04:59,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-19 05:04:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:59,919 INFO L225 Difference]: With dead ends: 401 [2020-08-19 05:04:59,919 INFO L226 Difference]: Without dead ends: 398 [2020-08-19 05:04:59,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:04:59,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-08-19 05:04:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 368. [2020-08-19 05:04:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-19 05:04:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2020-08-19 05:04:59,984 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 134 [2020-08-19 05:04:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:59,985 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2020-08-19 05:04:59,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:04:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2020-08-19 05:04:59,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-19 05:04:59,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:59,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:59,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:04:59,988 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:59,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1918338429, now seen corresponding path program 1 times [2020-08-19 05:04:59,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:59,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051550931] [2020-08-19 05:04:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,272 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:00,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:05:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 05:05:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 05:05:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 05:05:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 05:05:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 05:05:00,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051550931] [2020-08-19 05:05:00,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:00,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:05:00,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132232078] [2020-08-19 05:05:00,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:05:00,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:00,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:05:00,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:05:00,447 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand 12 states. [2020-08-19 05:05:00,841 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:01,639 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:02,231 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:02,529 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:02,800 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:03,073 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:03,372 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:03,624 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:05,196 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:05,436 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:06,120 INFO L93 Difference]: Finished difference Result 881 states and 1104 transitions. [2020-08-19 05:05:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 05:05:06,121 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-19 05:05:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:06,125 INFO L225 Difference]: With dead ends: 881 [2020-08-19 05:05:06,126 INFO L226 Difference]: Without dead ends: 600 [2020-08-19 05:05:06,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-19 05:05:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-19 05:05:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 513. [2020-08-19 05:05:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-19 05:05:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 606 transitions. [2020-08-19 05:05:06,224 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 606 transitions. Word has length 138 [2020-08-19 05:05:06,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:06,225 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 606 transitions. [2020-08-19 05:05:06,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:05:06,225 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 606 transitions. [2020-08-19 05:05:06,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-19 05:05:06,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:06,229 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:05:06,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:05:06,230 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash -169355685, now seen corresponding path program 2 times [2020-08-19 05:05:06,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:06,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719019612] [2020-08-19 05:05:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,585 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:06,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:05:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:05:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:05:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 05:05:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-19 05:05:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-19 05:05:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-19 05:05:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-19 05:05:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-19 05:05:06,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719019612] [2020-08-19 05:05:06,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:06,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 05:05:06,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896630873] [2020-08-19 05:05:06,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:05:06,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:06,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:05:06,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:05:06,833 INFO L87 Difference]: Start difference. First operand 513 states and 606 transitions. Second operand 14 states. [2020-08-19 05:05:07,244 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:07,845 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:08,714 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:09,030 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:09,286 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:09,545 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:09,827 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:10,068 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:11,370 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:11,645 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:12,826 INFO L93 Difference]: Finished difference Result 1240 states and 1606 transitions. [2020-08-19 05:05:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 05:05:12,826 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-19 05:05:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:12,832 INFO L225 Difference]: With dead ends: 1240 [2020-08-19 05:05:12,832 INFO L226 Difference]: Without dead ends: 814 [2020-08-19 05:05:12,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 05:05:12,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-19 05:05:12,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 511. [2020-08-19 05:05:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-19 05:05:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2020-08-19 05:05:12,928 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 196 [2020-08-19 05:05:12,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:12,929 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2020-08-19 05:05:12,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:05:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2020-08-19 05:05:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-19 05:05:12,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:12,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:05:12,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:05:12,932 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:12,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:12,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1150491295, now seen corresponding path program 3 times [2020-08-19 05:05:12,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:12,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899542521] [2020-08-19 05:05:12,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,216 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:13,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:05:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:05:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:05:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 05:05:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:05:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 05:05:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:05:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-19 05:05:13,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899542521] [2020-08-19 05:05:13,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:13,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:05:13,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041927480] [2020-08-19 05:05:13,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:05:13,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:13,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:05:13,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:05:13,570 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 13 states. [2020-08-19 05:05:14,801 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:15,073 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:16,704 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:05:16,963 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:17,221 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:17,676 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-19 05:05:19,304 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-19 05:05:19,577 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 05:05:19,889 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:05:20,133 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:05:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:21,137 INFO L93 Difference]: Finished difference Result 1408 states and 1753 transitions. [2020-08-19 05:05:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 05:05:21,138 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-19 05:05:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:21,145 INFO L225 Difference]: With dead ends: 1408 [2020-08-19 05:05:21,145 INFO L226 Difference]: Without dead ends: 982 [2020-08-19 05:05:21,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 05:05:21,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-08-19 05:05:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 833. [2020-08-19 05:05:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-08-19 05:05:21,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 968 transitions. [2020-08-19 05:05:21,324 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 968 transitions. Word has length 192 [2020-08-19 05:05:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:21,327 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 968 transitions. [2020-08-19 05:05:21,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:05:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 968 transitions. [2020-08-19 05:05:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-19 05:05:21,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:21,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:05:21,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 05:05:21,336 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:21,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1185901215, now seen corresponding path program 1 times [2020-08-19 05:05:21,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:21,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968573811] [2020-08-19 05:05:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,613 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:21,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:05:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:05:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:05:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 05:05:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:05:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 05:05:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:05:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-19 05:05:21,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968573811] [2020-08-19 05:05:21,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:21,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:05:21,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200148969] [2020-08-19 05:05:21,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:05:21,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:21,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:05:21,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:05:21,957 INFO L87 Difference]: Start difference. First operand 833 states and 968 transitions. Second operand 13 states. [2020-08-19 05:05:22,619 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:22,871 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:23,099 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:24,363 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:24,619 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:24,897 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:25,159 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188