/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:02:02,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:02:02,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:02:02,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:02:02,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:02:02,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:02:02,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:02:02,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:02:02,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:02:02,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:02:02,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:02:02,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:02:02,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:02:02,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:02:02,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:02:02,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:02:02,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:02:02,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:02:02,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:02:02,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:02:02,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:02:02,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:02:02,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:02:02,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:02:02,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:02:02,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:02:02,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:02:02,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:02:02,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:02:02,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:02:02,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:02:02,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:02:02,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:02:02,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:02:02,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:02:02,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:02:02,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:02:02,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:02:02,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:02:02,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:02:02,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:02:02,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:02:02,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:02:02,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:02:02,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:02:02,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:02:02,222 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:02:02,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:02:02,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:02:02,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:02:02,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:02:02,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:02:02,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:02:02,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:02:02,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:02:02,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:02:02,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:02:02,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:02:02,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:02:02,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:02:02,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:02:02,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:02:02,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:02:02,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:02:02,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:02:02,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:02:02,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:02:02,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:02:02,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:02:02,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:02:02,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:02:02,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:02:02,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:02:02,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:02:02,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:02:02,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:02:02,555 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:02:02,556 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-19 05:02:02,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4cd72801/91bb91ed0d844e9f877ee81f428bb8a2/FLAG201edb200 [2020-08-19 05:02:03,176 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:02:03,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-19 05:02:03,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4cd72801/91bb91ed0d844e9f877ee81f428bb8a2/FLAG201edb200 [2020-08-19 05:02:03,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4cd72801/91bb91ed0d844e9f877ee81f428bb8a2 [2020-08-19 05:02:03,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:02:03,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:02:03,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:02:03,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:02:03,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:02:03,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:02:03" (1/1) ... [2020-08-19 05:02:03,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:03, skipping insertion in model container [2020-08-19 05:02:03,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:02:03" (1/1) ... [2020-08-19 05:02:03,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:02:03,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:02:04,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:02:04,144 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:02:04,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:02:04,337 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:02:04,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04 WrapperNode [2020-08-19 05:02:04,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:02:04,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:02:04,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:02:04,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:02:04,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04" (1/1) ... [2020-08-19 05:02:04,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04" (1/1) ... [2020-08-19 05:02:04,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04" (1/1) ... [2020-08-19 05:02:04,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04" (1/1) ... [2020-08-19 05:02:04,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04" (1/1) ... [2020-08-19 05:02:04,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04" (1/1) ... [2020-08-19 05:02:04,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04" (1/1) ... [2020-08-19 05:02:04,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:02:04,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:02:04,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:02:04,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:02:04,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:02:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:02:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:02:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:02:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:02:04,534 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:02:04,534 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:02:04,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:02:04,534 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:02:04,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:02:04,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:02:04,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:02:04,535 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:02:04,535 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:02:04,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:02:04,536 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:02:04,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:02:04,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:02:04,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:02:04,536 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:02:04,537 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:02:04,537 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:02:04,537 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:02:04,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:02:04,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:02:04,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:02:04,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:02:04,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:02:04,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:02:04,538 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:02:04,538 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:02:04,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:02:04,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:02:04,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 05:02:04,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:02:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:02:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:02:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:02:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:02:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:02:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:02:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:02:04,544 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 05:02:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:02:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:02:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:02:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:02:04,544 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:02:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:02:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:02:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:02:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:02:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:02:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:02:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:02:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:02:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:02:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:02:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:02:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:02:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:02:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:02:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:02:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:02:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:02:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:02:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:02:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:02:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:02:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:02:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:02:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:02:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:02:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:02:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:02:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:02:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:02:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:02:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:02:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:02:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:02:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:02:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:02:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:02:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:02:04,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:02:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 05:02:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:02:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:02:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:02:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:02:04,551 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:02:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:02:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:02:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 05:02:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:02:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:02:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:02:04,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:02:05,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:02:05,639 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:02:05,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:02:05 BoogieIcfgContainer [2020-08-19 05:02:05,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:02:05,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:02:05,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:02:05,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:02:05,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:02:03" (1/3) ... [2020-08-19 05:02:05,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f517355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:02:05, skipping insertion in model container [2020-08-19 05:02:05,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:02:04" (2/3) ... [2020-08-19 05:02:05,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f517355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:02:05, skipping insertion in model container [2020-08-19 05:02:05,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:02:05" (3/3) ... [2020-08-19 05:02:05,653 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-19 05:02:05,663 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:02:05,671 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:02:05,685 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:02:05,710 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:02:05,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:02:05,711 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:02:05,711 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:02:05,711 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:02:05,711 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:02:05,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:02:05,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:02:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-19 05:02:05,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:02:05,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:05,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:05,752 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:05,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:05,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-19 05:02:05,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:05,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680849696] [2020-08-19 05:02:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:06,419 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:06,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:06,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:06,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:02:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:02:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:02:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:06,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680849696] [2020-08-19 05:02:06,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:06,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:02:06,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936705089] [2020-08-19 05:02:06,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:02:06,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:06,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:02:06,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:02:06,565 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-19 05:02:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:07,875 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-19 05:02:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:02:07,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 05:02:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:07,913 INFO L225 Difference]: With dead ends: 350 [2020-08-19 05:02:07,914 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 05:02:07,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:02:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 05:02:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-19 05:02:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-19 05:02:08,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-19 05:02:08,019 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-19 05:02:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:08,020 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-19 05:02:08,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:02:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-19 05:02:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 05:02:08,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:08,024 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] [2020-08-19 05:02:08,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:02:08,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:08,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:08,026 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-19 05:02:08,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:08,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089323755] [2020-08-19 05:02:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:08,329 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:08,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:08,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:08,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:08,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:02:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:08,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:02:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:08,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:02:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:08,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089323755] [2020-08-19 05:02:08,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:08,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:02:08,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450632389] [2020-08-19 05:02:08,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:02:08,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:08,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:02:08,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:02:08,390 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-19 05:02:08,814 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:09,883 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-19 05:02:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:02:09,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 05:02:09,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:09,888 INFO L225 Difference]: With dead ends: 279 [2020-08-19 05:02:09,888 INFO L226 Difference]: Without dead ends: 172 [2020-08-19 05:02:09,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:02:09,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-19 05:02:09,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-19 05:02:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-19 05:02:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-19 05:02:09,937 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-19 05:02:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:09,937 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-19 05:02:09,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:02:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-19 05:02:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 05:02:09,940 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:09,940 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] [2020-08-19 05:02:09,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:02:09,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:09,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:09,941 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-19 05:02:09,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:09,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891465817] [2020-08-19 05:02:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:10,325 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:10,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:10,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:10,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:10,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:10,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:02:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:10,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:02:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:10,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:02:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:10,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891465817] [2020-08-19 05:02:10,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:10,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:02:10,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306598604] [2020-08-19 05:02:10,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:02:10,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:10,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:02:10,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:02:10,422 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-19 05:02:10,797 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:11,097 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:11,355 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:11,606 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:13,096 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-19 05:02:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:02:13,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 05:02:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:13,101 INFO L225 Difference]: With dead ends: 292 [2020-08-19 05:02:13,101 INFO L226 Difference]: Without dead ends: 172 [2020-08-19 05:02:13,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-19 05:02:13,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-19 05:02:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-19 05:02:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-19 05:02:13,145 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-19 05:02:13,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:13,146 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-19 05:02:13,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:02:13,146 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-19 05:02:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-19 05:02:13,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:13,150 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] [2020-08-19 05:02:13,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:02:13,150 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:13,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:13,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-19 05:02:13,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:13,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90399066] [2020-08-19 05:02:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,452 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:13,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:02:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 05:02:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 05:02:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 05:02:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:13,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90399066] [2020-08-19 05:02:13,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:13,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:02:13,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942056893] [2020-08-19 05:02:13,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:02:13,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:13,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:02:13,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:02:13,550 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-19 05:02:13,875 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:15,158 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:16,036 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-19 05:02:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:02:16,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-19 05:02:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:16,052 INFO L225 Difference]: With dead ends: 407 [2020-08-19 05:02:16,052 INFO L226 Difference]: Without dead ends: 287 [2020-08-19 05:02:16,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:02:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-19 05:02:16,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-19 05:02:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-19 05:02:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-19 05:02:16,122 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-19 05:02:16,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:16,123 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-19 05:02:16,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:02:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-19 05:02:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 05:02:16,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:16,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:16,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:02:16,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:16,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:16,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-19 05:02:16,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:16,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994302602] [2020-08-19 05:02:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,403 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:02:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 05:02:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 05:02:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 05:02:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:16,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994302602] [2020-08-19 05:02:16,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:16,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:02:16,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86681520] [2020-08-19 05:02:16,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:02:16,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:16,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:02:16,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:02:16,503 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-19 05:02:16,871 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:18,287 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:18,580 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:18,823 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:19,058 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:19,925 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-19 05:02:19,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:02:19,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-19 05:02:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:19,930 INFO L225 Difference]: With dead ends: 641 [2020-08-19 05:02:19,930 INFO L226 Difference]: Without dead ends: 421 [2020-08-19 05:02:19,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:02:19,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-19 05:02:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-19 05:02:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-19 05:02:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-19 05:02:19,997 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-19 05:02:19,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:19,998 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-19 05:02:19,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:02:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-19 05:02:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 05:02:20,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:20,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:20,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:02:20,001 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:20,001 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-19 05:02:20,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:20,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861300316] [2020-08-19 05:02:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,277 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:20,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:02:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:02:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 05:02:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 05:02:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:20,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861300316] [2020-08-19 05:02:20,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:20,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:02:20,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690780443] [2020-08-19 05:02:20,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:02:20,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:20,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:02:20,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:02:20,399 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-19 05:02:20,723 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:21,275 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:22,941 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:25,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:25,169 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-19 05:02:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 05:02:25,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-19 05:02:25,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:25,176 INFO L225 Difference]: With dead ends: 980 [2020-08-19 05:02:25,176 INFO L226 Difference]: Without dead ends: 749 [2020-08-19 05:02:25,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-19 05:02:25,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-19 05:02:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-19 05:02:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-19 05:02:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-19 05:02:25,285 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-19 05:02:25,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:25,286 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-19 05:02:25,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:02:25,286 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-19 05:02:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 05:02:25,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:25,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:25,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:02:25,288 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:25,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-19 05:02:25,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:25,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821850730] [2020-08-19 05:02:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,532 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:02:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:02:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 05:02:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 05:02:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:25,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821850730] [2020-08-19 05:02:25,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:25,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:02:25,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832100862] [2020-08-19 05:02:25,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:02:25,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:25,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:02:25,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:02:25,680 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-19 05:02:26,598 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:26,833 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:27,062 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:28,282 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-19 05:02:28,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:02:28,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 05:02:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:28,290 INFO L225 Difference]: With dead ends: 1250 [2020-08-19 05:02:28,290 INFO L226 Difference]: Without dead ends: 723 [2020-08-19 05:02:28,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-19 05:02:28,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-19 05:02:28,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-19 05:02:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-19 05:02:28,494 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-19 05:02:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:28,495 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-19 05:02:28,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:02:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-19 05:02:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 05:02:28,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:28,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:28,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:02:28,498 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:28,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-19 05:02:28,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:28,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634558980] [2020-08-19 05:02:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,768 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:28,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:02:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:02:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 05:02:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 05:02:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:28,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634558980] [2020-08-19 05:02:28,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:28,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:02:28,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315356026] [2020-08-19 05:02:28,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:02:28,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:28,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:02:28,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:28,945 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-19 05:02:29,419 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:29,661 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:29,882 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:30,594 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:30,841 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:31,108 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:31,358 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:32,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:32,788 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-19 05:02:32,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 05:02:32,789 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-19 05:02:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:32,796 INFO L225 Difference]: With dead ends: 1343 [2020-08-19 05:02:32,796 INFO L226 Difference]: Without dead ends: 689 [2020-08-19 05:02:32,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 05:02:32,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-19 05:02:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-19 05:02:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 05:02:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-19 05:02:32,960 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-19 05:02:32,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:32,961 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-19 05:02:32,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:02:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-19 05:02:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 05:02:32,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:32,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:32,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:02:32,966 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-19 05:02:32,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:32,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041639332] [2020-08-19 05:02:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,267 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:33,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:02:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:02:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:02:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 05:02:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:02:33,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041639332] [2020-08-19 05:02:33,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:02:33,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 05:02:33,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768155692] [2020-08-19 05:02:33,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:02:33,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:33,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:02:33,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:02:33,465 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-19 05:02:34,183 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:34,482 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:34,802 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:36,010 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:36,665 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:37,001 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:37,290 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:38,156 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:38,473 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:39,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:39,050 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-19 05:02:39,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 05:02:39,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-19 05:02:39,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:39,056 INFO L225 Difference]: With dead ends: 1307 [2020-08-19 05:02:39,057 INFO L226 Difference]: Without dead ends: 682 [2020-08-19 05:02:39,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-19 05:02:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-19 05:02:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-19 05:02:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 05:02:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-19 05:02:39,230 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-19 05:02:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:39,231 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-19 05:02:39,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:02:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-19 05:02:39,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 05:02:39,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:39,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:39,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:02:39,238 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:39,238 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-19 05:02:39,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:39,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750649496] [2020-08-19 05:02:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,559 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:39,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:02:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:02:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 05:02:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 05:02:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:02:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:02:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-19 05:02:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 05:02:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-19 05:02:39,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750649496] [2020-08-19 05:02:39,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:02:39,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:02:39,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376036846] [2020-08-19 05:02:39,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:02:39,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:39,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:02:39,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:02:39,761 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-19 05:02:40,736 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:40,976 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:02:41,222 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:41,462 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:42,497 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-19 05:02:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:02:42,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-19 05:02:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:42,506 INFO L225 Difference]: With dead ends: 1216 [2020-08-19 05:02:42,507 INFO L226 Difference]: Without dead ends: 670 [2020-08-19 05:02:42,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:02:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-19 05:02:42,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-19 05:02:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-19 05:02:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-19 05:02:42,654 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-19 05:02:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:42,655 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-19 05:02:42,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:02:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-19 05:02:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 05:02:42,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:42,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:42,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:02:42,660 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:42,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:42,661 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-19 05:02:42,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:42,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013029372] [2020-08-19 05:02:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,025 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:43,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:02:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:02:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 05:02:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 05:02:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:02:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:02:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-19 05:02:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 05:02:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-19 05:02:43,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013029372] [2020-08-19 05:02:43,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:02:43,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:02:43,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037037974] [2020-08-19 05:02:43,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:02:43,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:43,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:02:43,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:02:43,316 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-19 05:02:43,819 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:44,093 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:44,319 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:44,980 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:45,227 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:45,447 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:46,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:46,593 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-19 05:02:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:02:46,594 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-19 05:02:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:46,598 INFO L225 Difference]: With dead ends: 1124 [2020-08-19 05:02:46,598 INFO L226 Difference]: Without dead ends: 573 [2020-08-19 05:02:46,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:02:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-19 05:02:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-19 05:02:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-19 05:02:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-19 05:02:46,698 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-19 05:02:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:46,698 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-19 05:02:46,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:02:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-19 05:02:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 05:02:46,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:46,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:46,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:02:46,701 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:46,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:46,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-19 05:02:46,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:46,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082157227] [2020-08-19 05:02:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:46,983 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:02:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:02:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 05:02:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 05:02:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:02:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 05:02:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:02:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 05:02:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-19 05:02:47,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082157227] [2020-08-19 05:02:47,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:02:47,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:02:47,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836666347] [2020-08-19 05:02:47,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:02:47,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:47,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:02:47,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:02:47,244 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-19 05:02:47,614 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:48,201 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:49,108 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:49,602 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-19 05:02:50,089 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-19 05:02:50,322 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:02:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:51,995 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-19 05:02:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 05:02:51,995 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-19 05:02:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:52,002 INFO L225 Difference]: With dead ends: 1637 [2020-08-19 05:02:52,003 INFO L226 Difference]: Without dead ends: 1109 [2020-08-19 05:02:52,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-19 05:02:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-19 05:02:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-19 05:02:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-19 05:02:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-19 05:02:52,255 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-19 05:02:52,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:52,257 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-19 05:02:52,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:02:52,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-19 05:02:52,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 05:02:52,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:52,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:52,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 05:02:52,261 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:52,261 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-19 05:02:52,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:52,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417973601] [2020-08-19 05:02:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,570 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:02:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:02:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:02:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 05:02:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:02:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:02:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 05:02:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 05:02:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 05:02:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 05:02:52,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417973601] [2020-08-19 05:02:52,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:02:52,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:02:52,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096026828] [2020-08-19 05:02:52,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:02:52,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:52,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:02:52,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:02:52,826 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-19 05:02:53,729 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:53,970 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:54,214 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:02:54,836 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:56,012 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:02:56,356 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:02:56,648 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:56,912 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:02:58,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:02:58,954 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-19 05:02:58,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 05:02:58,954 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-19 05:02:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:02:58,962 INFO L225 Difference]: With dead ends: 2187 [2020-08-19 05:02:58,962 INFO L226 Difference]: Without dead ends: 1134 [2020-08-19 05:02:58,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-19 05:02:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-19 05:02:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-19 05:02:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-19 05:02:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-19 05:02:59,189 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-19 05:02:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:02:59,190 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-19 05:02:59,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:02:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-19 05:02:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 05:02:59,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:02:59,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:02:59,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 05:02:59,193 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:02:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:02:59,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-19 05:02:59,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:02:59,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405950879] [2020-08-19 05:02:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:02:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,467 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:02:59,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:02:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:02:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:02:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:02:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:02:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:02:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:02:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:02:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:02:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:02:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 05:02:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 05:02:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:02:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:02:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:02:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:02:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 05:02:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 05:02:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:02:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-19 05:02:59,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405950879] [2020-08-19 05:02:59,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:02:59,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:02:59,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848763351] [2020-08-19 05:02:59,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:02:59,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:02:59,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:02:59,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:02:59,704 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states.