/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:21:03,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:21:03,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:21:03,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:21:03,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:21:03,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:21:03,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:21:03,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:21:03,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:21:03,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:21:03,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:21:03,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:21:03,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:21:03,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:21:03,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:21:03,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:21:03,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:21:03,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:21:03,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:21:03,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:21:03,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:21:03,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:21:03,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:21:03,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:21:03,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:21:03,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:21:03,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:21:03,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:21:03,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:21:03,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:21:03,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:21:03,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:21:03,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:21:03,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:21:03,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:21:03,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:21:03,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:21:03,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:21:03,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:21:03,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:21:03,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:21:03,288 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 [2020-08-22 05:21:03,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:21:03,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:21:03,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:21:03,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:21:03,311 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:21:03,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:21:03,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:21:03,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:21:03,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:21:03,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:21:03,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:21:03,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:21:03,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:21:03,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:21:03,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:21:03,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:21:03,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:21:03,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:21:03,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:21:03,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:21:03,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:21:03,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:21:03,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:21:03,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:21:03,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:21:03,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:21:03,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:21:03,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:21:03,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:21:03,316 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:21:03,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:21:03,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:21:03,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:21:03,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:21:03,618 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:21:03,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-22 05:21:03,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da76c4aa0/156e940814254750b370c73ca84f85d7/FLAGbe187a474 [2020-08-22 05:21:04,212 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:21:04,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-22 05:21:04,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da76c4aa0/156e940814254750b370c73ca84f85d7/FLAGbe187a474 [2020-08-22 05:21:04,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da76c4aa0/156e940814254750b370c73ca84f85d7 [2020-08-22 05:21:04,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:21:04,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:21:04,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:21:04,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:21:04,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:21:04,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:21:04" (1/1) ... [2020-08-22 05:21:04,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7035d330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:04, skipping insertion in model container [2020-08-22 05:21:04,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:21:04" (1/1) ... [2020-08-22 05:21:04,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:21:04,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:21:04,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:21:04,962 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:21:05,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:21:05,100 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:21:05,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05 WrapperNode [2020-08-22 05:21:05,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:21:05,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:21:05,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:21:05,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:21:05,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05" (1/1) ... [2020-08-22 05:21:05,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05" (1/1) ... [2020-08-22 05:21:05,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05" (1/1) ... [2020-08-22 05:21:05,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05" (1/1) ... [2020-08-22 05:21:05,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05" (1/1) ... [2020-08-22 05:21:05,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05" (1/1) ... [2020-08-22 05:21:05,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05" (1/1) ... [2020-08-22 05:21:05,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:21:05,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:21:05,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:21:05,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:21:05,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05" (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 [2020-08-22 05:21:05,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:21:05,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:21:05,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:21:05,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:21:05,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:21:05,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:21:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:21:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:21:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:21:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:21:05,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:21:05,295 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:21:05,295 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:21:05,295 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:21:05,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:21:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:21:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:21:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:21:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 05:21:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:21:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:21:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:21:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:21:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:21:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:21:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:21:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:21:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:21:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:21:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:21:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:21:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:21:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 05:21:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:21:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:21:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:21:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:21:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:21:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:21:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 05:21:05,301 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:21:05,301 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:21:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:21:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:21:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:21:05,301 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:21:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:21:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:21:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:21:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:21:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:21:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:21:05,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:21:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:21:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:21:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:21:05,303 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:21:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:21:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:21:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:21:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:21:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:21:05,304 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:21:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:21:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:21:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:21:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:21:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:21:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:21:05,305 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:21:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:21:05,306 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:21:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 05:21:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:21:05,307 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:21:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:21:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:21:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:21:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:21:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:21:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:21:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:21:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:21:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:21:05,310 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:21:05,310 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:21:05,310 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:21:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:21:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:21:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:21:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:21:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:21:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 05:21:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 05:21:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:21:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:21:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:21:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:21:06,362 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:21:06,362 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:21:06,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:21:06 BoogieIcfgContainer [2020-08-22 05:21:06,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:21:06,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:21:06,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:21:06,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:21:06,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:21:04" (1/3) ... [2020-08-22 05:21:06,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e992a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:21:06, skipping insertion in model container [2020-08-22 05:21:06,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:05" (2/3) ... [2020-08-22 05:21:06,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e992a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:21:06, skipping insertion in model container [2020-08-22 05:21:06,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:21:06" (3/3) ... [2020-08-22 05:21:06,376 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2020-08-22 05:21:06,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:21:06,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:21:06,409 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:21:06,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:21:06,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:21:06,434 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:21:06,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:21:06,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:21:06,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:21:06,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:21:06,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:21:06,459 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-22 05:21:06,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:21:06,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:06,470 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] [2020-08-22 05:21:06,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:06,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:06,477 INFO L82 PathProgramCache]: Analyzing trace with hash -298144076, now seen corresponding path program 1 times [2020-08-22 05:21:06,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:06,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890148241] [2020-08-22 05:21:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:07,094 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:07,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:07,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:21:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:21:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:07,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890148241] [2020-08-22 05:21:07,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:07,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:21:07,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815015255] [2020-08-22 05:21:07,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:21:07,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:07,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:21:07,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:21:07,259 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-22 05:21:08,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:08,532 INFO L93 Difference]: Finished difference Result 338 states and 432 transitions. [2020-08-22 05:21:08,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:21:08,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:21:08,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:08,549 INFO L225 Difference]: With dead ends: 338 [2020-08-22 05:21:08,549 INFO L226 Difference]: Without dead ends: 182 [2020-08-22 05:21:08,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:21:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-22 05:21:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-22 05:21:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-22 05:21:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2020-08-22 05:21:08,651 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 46 [2020-08-22 05:21:08,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:08,652 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2020-08-22 05:21:08,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:21:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2020-08-22 05:21:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:21:08,655 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:08,656 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] [2020-08-22 05:21:08,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:21:08,656 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:08,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:08,657 INFO L82 PathProgramCache]: Analyzing trace with hash -491113124, now seen corresponding path program 1 times [2020-08-22 05:21:08,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:08,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844786874] [2020-08-22 05:21:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,006 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:21:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:09,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844786874] [2020-08-22 05:21:09,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:09,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:21:09,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122098956] [2020-08-22 05:21:09,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:21:09,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:09,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:21:09,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:21:09,052 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand 4 states. [2020-08-22 05:21:09,489 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:10,552 INFO L93 Difference]: Finished difference Result 267 states and 319 transitions. [2020-08-22 05:21:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:21:10,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:21:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:10,556 INFO L225 Difference]: With dead ends: 267 [2020-08-22 05:21:10,557 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 05:21:10,558 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 [2020-08-22 05:21:10,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 05:21:10,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-22 05:21:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 05:21:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-08-22 05:21:10,635 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 47 [2020-08-22 05:21:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:10,636 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-08-22 05:21:10,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:21:10,637 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-08-22 05:21:10,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:21:10,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:10,647 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] [2020-08-22 05:21:10,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:21:10,647 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:10,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1388977157, now seen corresponding path program 1 times [2020-08-22 05:21:10,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:10,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036179791] [2020-08-22 05:21:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:11,086 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:11,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:21:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:11,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:21:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:11,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036179791] [2020-08-22 05:21:11,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:11,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:21:11,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431389823] [2020-08-22 05:21:11,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:21:11,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:11,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:21:11,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:21:11,190 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2020-08-22 05:21:11,551 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:11,954 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:12,239 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:12,513 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:13,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:13,958 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2020-08-22 05:21:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:21:13,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 05:21:13,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:13,968 INFO L225 Difference]: With dead ends: 280 [2020-08-22 05:21:13,968 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 05:21:13,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:13,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 05:21:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-22 05:21:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 05:21:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2020-08-22 05:21:14,000 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 52 [2020-08-22 05:21:14,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:14,001 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2020-08-22 05:21:14,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:21:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2020-08-22 05:21:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 05:21:14,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:14,003 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] [2020-08-22 05:21:14,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:21:14,004 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:14,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:14,004 INFO L82 PathProgramCache]: Analyzing trace with hash 105794737, now seen corresponding path program 1 times [2020-08-22 05:21:14,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:14,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141474232] [2020-08-22 05:21:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,363 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:14,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:21:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 05:21:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 05:21:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:14,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141474232] [2020-08-22 05:21:14,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:14,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:21:14,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372861596] [2020-08-22 05:21:14,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:21:14,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:14,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:21:14,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:21:14,449 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand 6 states. [2020-08-22 05:21:14,785 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:16,152 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:16,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:16,886 INFO L93 Difference]: Finished difference Result 377 states and 459 transitions. [2020-08-22 05:21:16,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:21:16,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-22 05:21:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:16,890 INFO L225 Difference]: With dead ends: 377 [2020-08-22 05:21:16,891 INFO L226 Difference]: Without dead ends: 263 [2020-08-22 05:21:16,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:21:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-22 05:21:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 220. [2020-08-22 05:21:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 05:21:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions. [2020-08-22 05:21:16,972 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 65 [2020-08-22 05:21:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:16,972 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 248 transitions. [2020-08-22 05:21:16,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:21:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions. [2020-08-22 05:21:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 05:21:16,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:16,974 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] [2020-08-22 05:21:16,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:21:16,974 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:16,975 INFO L82 PathProgramCache]: Analyzing trace with hash -830596407, now seen corresponding path program 1 times [2020-08-22 05:21:16,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:16,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943249501] [2020-08-22 05:21:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,271 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:21:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:21:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:21:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:17,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943249501] [2020-08-22 05:21:17,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:17,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:21:17,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790692528] [2020-08-22 05:21:17,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:21:17,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:17,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:21:17,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:21:17,422 INFO L87 Difference]: Start difference. First operand 220 states and 248 transitions. Second operand 10 states. [2020-08-22 05:21:17,884 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:18,175 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:18,444 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:19,089 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:19,382 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:19,642 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:20,762 INFO L93 Difference]: Finished difference Result 460 states and 553 transitions. [2020-08-22 05:21:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:21:20,764 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-08-22 05:21:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:20,767 INFO L225 Difference]: With dead ends: 460 [2020-08-22 05:21:20,767 INFO L226 Difference]: Without dead ends: 264 [2020-08-22 05:21:20,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-22 05:21:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-22 05:21:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224. [2020-08-22 05:21:20,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-22 05:21:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2020-08-22 05:21:20,809 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 79 [2020-08-22 05:21:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:20,810 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2020-08-22 05:21:20,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:21:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2020-08-22 05:21:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 05:21:20,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:20,812 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] [2020-08-22 05:21:20,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:21:20,812 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:20,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:20,812 INFO L82 PathProgramCache]: Analyzing trace with hash 2078167495, now seen corresponding path program 1 times [2020-08-22 05:21:20,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:20,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867831867] [2020-08-22 05:21:20,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,187 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:21:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:21:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:21:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:21,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867831867] [2020-08-22 05:21:21,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:21,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:21:21,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382215647] [2020-08-22 05:21:21,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:21:21,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:21,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:21:21,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:21,313 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand 12 states. [2020-08-22 05:21:21,811 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:22,179 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:22,459 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:22,722 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:23,309 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:24,276 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:24,616 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:24,894 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:25,209 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:25,558 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:25,839 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:27,330 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:27,731 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:28,439 INFO L93 Difference]: Finished difference Result 789 states and 997 transitions. [2020-08-22 05:21:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:21:28,440 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-22 05:21:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:28,446 INFO L225 Difference]: With dead ends: 789 [2020-08-22 05:21:28,446 INFO L226 Difference]: Without dead ends: 589 [2020-08-22 05:21:28,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 05:21:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-08-22 05:21:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 527. [2020-08-22 05:21:28,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-22 05:21:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 609 transitions. [2020-08-22 05:21:28,557 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 609 transitions. Word has length 79 [2020-08-22 05:21:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:28,558 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 609 transitions. [2020-08-22 05:21:28,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 609 transitions. [2020-08-22 05:21:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 05:21:28,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:28,562 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:28,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:21:28,563 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:28,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1201141545, now seen corresponding path program 1 times [2020-08-22 05:21:28,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:28,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718434590] [2020-08-22 05:21:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:28,944 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:28,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:28,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:21:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 05:21:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 05:21:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 05:21:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 05:21:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-22 05:21:29,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718434590] [2020-08-22 05:21:29,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:29,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:21:29,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15383102] [2020-08-22 05:21:29,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:21:29,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:29,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:21:29,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:21:29,434 INFO L87 Difference]: Start difference. First operand 527 states and 609 transitions. Second operand 13 states. [2020-08-22 05:21:29,972 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:30,618 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:31,254 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:31,579 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 05:21:31,872 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:32,139 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:32,425 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:32,744 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 05:21:33,069 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:33,358 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:35,190 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:35,459 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:21:35,724 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:36,007 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:36,565 INFO L93 Difference]: Finished difference Result 937 states and 1177 transitions. [2020-08-22 05:21:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 05:21:36,566 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-22 05:21:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:36,570 INFO L225 Difference]: With dead ends: 937 [2020-08-22 05:21:36,570 INFO L226 Difference]: Without dead ends: 434 [2020-08-22 05:21:36,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 05:21:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-22 05:21:36,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 380. [2020-08-22 05:21:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-08-22 05:21:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 443 transitions. [2020-08-22 05:21:36,677 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 443 transitions. Word has length 154 [2020-08-22 05:21:36,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:36,677 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 443 transitions. [2020-08-22 05:21:36,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:21:36,678 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 443 transitions. [2020-08-22 05:21:36,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 05:21:36,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:36,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:36,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:21:36,683 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:36,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:36,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1319690960, now seen corresponding path program 1 times [2020-08-22 05:21:36,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:36,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985322015] [2020-08-22 05:21:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,050 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:37,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:21:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 05:21:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 05:21:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 05:21:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 05:21:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 05:21:37,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985322015] [2020-08-22 05:21:37,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:37,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:21:37,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846919660] [2020-08-22 05:21:37,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:21:37,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:37,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:21:37,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:21:37,211 INFO L87 Difference]: Start difference. First operand 380 states and 443 transitions. Second operand 10 states. [2020-08-22 05:21:38,798 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:39,071 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:39,357 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:39,622 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:40,088 INFO L93 Difference]: Finished difference Result 704 states and 848 transitions. [2020-08-22 05:21:40,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:21:40,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-22 05:21:40,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:40,098 INFO L225 Difference]: With dead ends: 704 [2020-08-22 05:21:40,098 INFO L226 Difference]: Without dead ends: 411 [2020-08-22 05:21:40,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:21:40,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-08-22 05:21:40,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 385. [2020-08-22 05:21:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-22 05:21:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 448 transitions. [2020-08-22 05:21:40,189 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 448 transitions. Word has length 149 [2020-08-22 05:21:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:40,190 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 448 transitions. [2020-08-22 05:21:40,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:21:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 448 transitions. [2020-08-22 05:21:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 05:21:40,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:40,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:40,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:21:40,194 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:40,195 INFO L82 PathProgramCache]: Analyzing trace with hash 810217870, now seen corresponding path program 1 times [2020-08-22 05:21:40,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:40,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660198641] [2020-08-22 05:21:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,526 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:40,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:21:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 05:21:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 05:21:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 05:21:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 05:21:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 05:21:40,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660198641] [2020-08-22 05:21:40,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:40,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:21:40,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207314289] [2020-08-22 05:21:40,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:21:40,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:40,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:21:40,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:21:40,728 INFO L87 Difference]: Start difference. First operand 385 states and 448 transitions. Second operand 10 states. [2020-08-22 05:21:41,123 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:42,843 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:43,124 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:43,392 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:43,655 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:43,974 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:44,402 INFO L93 Difference]: Finished difference Result 418 states and 500 transitions. [2020-08-22 05:21:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:21:44,403 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-22 05:21:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:44,408 INFO L225 Difference]: With dead ends: 418 [2020-08-22 05:21:44,409 INFO L226 Difference]: Without dead ends: 415 [2020-08-22 05:21:44,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:21:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-08-22 05:21:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2020-08-22 05:21:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-22 05:21:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2020-08-22 05:21:44,507 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 149 [2020-08-22 05:21:44,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:44,507 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2020-08-22 05:21:44,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:21:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2020-08-22 05:21:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 05:21:44,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:44,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:44,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:21:44,510 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:44,511 INFO L82 PathProgramCache]: Analyzing trace with hash -488644751, now seen corresponding path program 1 times [2020-08-22 05:21:44,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:44,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700627550] [2020-08-22 05:21:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,858 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:21:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 05:21:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 05:21:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 05:21:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 05:21:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 05:21:45,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700627550] [2020-08-22 05:21:45,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:45,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:21:45,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089617602] [2020-08-22 05:21:45,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:21:45,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:21:45,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:45,073 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand 12 states. [2020-08-22 05:21:45,435 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:46,055 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:46,912 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:47,234 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:47,497 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:47,778 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:48,080 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:48,358 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:49,697 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:50,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:50,533 INFO L93 Difference]: Finished difference Result 922 states and 1160 transitions. [2020-08-22 05:21:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 05:21:50,534 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-08-22 05:21:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:50,538 INFO L225 Difference]: With dead ends: 922 [2020-08-22 05:21:50,538 INFO L226 Difference]: Without dead ends: 624 [2020-08-22 05:21:50,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-22 05:21:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-08-22 05:21:50,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 528. [2020-08-22 05:21:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-08-22 05:21:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 621 transitions. [2020-08-22 05:21:50,637 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 621 transitions. Word has length 153 [2020-08-22 05:21:50,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:50,640 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 621 transitions. [2020-08-22 05:21:50,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 621 transitions. [2020-08-22 05:21:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-22 05:21:50,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:50,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:50,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:21:50,645 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:50,645 INFO L82 PathProgramCache]: Analyzing trace with hash 700598337, now seen corresponding path program 2 times [2020-08-22 05:21:50,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:50,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790125570] [2020-08-22 05:21:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,057 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:21:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 05:21:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:21:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 05:21:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 05:21:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 05:21:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 05:21:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 05:21:51,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790125570] [2020-08-22 05:21:51,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:51,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:21:51,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205025585] [2020-08-22 05:21:51,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:21:51,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:51,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:21:51,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:21:51,554 INFO L87 Difference]: Start difference. First operand 528 states and 621 transitions. Second operand 13 states. [2020-08-22 05:21:52,709 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:53,014 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:54,841 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 05:21:55,143 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:55,441 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:55,938 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-22 05:21:57,690 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-22 05:21:58,042 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 05:21:58,383 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:21:58,682 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:21:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:59,717 INFO L93 Difference]: Finished difference Result 1442 states and 1789 transitions. [2020-08-22 05:21:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 05:21:59,718 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-22 05:21:59,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:59,724 INFO L225 Difference]: With dead ends: 1442 [2020-08-22 05:21:59,725 INFO L226 Difference]: Without dead ends: 999 [2020-08-22 05:21:59,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 05:21:59,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-08-22 05:21:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 850. [2020-08-22 05:21:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-22 05:21:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-22 05:21:59,888 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 207 [2020-08-22 05:21:59,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:59,889 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-22 05:21:59,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:21:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-22 05:21:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-22 05:21:59,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:59,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:59,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:21:59,893 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:59,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:59,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1257976449, now seen corresponding path program 1 times [2020-08-22 05:21:59,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:59,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599835181] [2020-08-22 05:21:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,204 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:22:00,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:22:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:22:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:22:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:22:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:22:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:22:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 05:22:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:22:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:22:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 05:22:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 05:22:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:22:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 05:22:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 05:22:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-22 05:22:00,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599835181] [2020-08-22 05:22:00,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:22:00,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:22:00,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059807297] [2020-08-22 05:22:00,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:22:00,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:22:00,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:22:00,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:22:00,436 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 13 states. [2020-08-22 05:22:01,033 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:01,283 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:01,536 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:03,058 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:03,340 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:22:03,651 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:22:03,925 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:22:04,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:22:04,232 INFO L93 Difference]: Finished difference Result 1133 states and 1322 transitions. [2020-08-22 05:22:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 05:22:04,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-22 05:22:04,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:22:04,233 INFO L225 Difference]: With dead ends: 1133 [2020-08-22 05:22:04,233 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 05:22:04,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-22 05:22:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 05:22:04,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 05:22:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 05:22:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 05:22:04,238 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2020-08-22 05:22:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:22:04,238 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 05:22:04,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:22:04,238 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 05:22:04,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 05:22:04,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 05:22:04,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.