/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=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:36:45,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:36:45,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:36:45,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:36:45,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:36:45,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:36:45,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:36:45,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:36:45,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:36:45,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:36:45,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:36:45,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:36:45,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:36:45,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:36:45,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:36:45,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:36:45,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:36:45,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:36:45,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:36:45,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:36:45,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:36:45,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:36:45,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:36:45,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:36:45,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:36:45,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:36:45,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:36:45,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:36:45,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:36:45,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:36:45,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:36:45,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:36:45,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:36:45,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:36:45,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:36:45,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:36:45,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:36:45,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:36:45,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:36:45,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:36:45,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:36:45,414 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 06:36:45,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:36:45,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:36:45,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:36:45,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:36:45,438 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:36:45,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:36:45,439 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:36:45,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:36:45,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:36:45,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:36:45,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:36:45,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:36:45,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:36:45,440 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:36:45,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:36:45,441 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:36:45,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:36:45,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:36:45,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:36:45,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:36:45,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:36:45,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:36:45,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:36:45,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:36:45,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:36:45,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:36:45,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:36:45,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:36:45,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:36:45,443 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=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:36:45,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:36:45,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:36:45,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:36:45,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:36:45,798 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:36:45,799 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-19 06:36:45,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77ff24211/f2cbed7b7da74d66901bbbb525f3ea48/FLAG94081c6b1 [2020-08-19 06:36:46,370 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:36:46,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-19 06:36:46,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77ff24211/f2cbed7b7da74d66901bbbb525f3ea48/FLAG94081c6b1 [2020-08-19 06:36:46,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77ff24211/f2cbed7b7da74d66901bbbb525f3ea48 [2020-08-19 06:36:46,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:36:46,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:36:46,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:36:46,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:36:46,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:36:46,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:36:46" (1/1) ... [2020-08-19 06:36:46,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:46, skipping insertion in model container [2020-08-19 06:36:46,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:36:46" (1/1) ... [2020-08-19 06:36:46,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:36:46,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:36:47,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:36:47,154 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:36:47,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:36:47,442 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:36:47,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47 WrapperNode [2020-08-19 06:36:47,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:36:47,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:36:47,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:36:47,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:36:47,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47" (1/1) ... [2020-08-19 06:36:47,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47" (1/1) ... [2020-08-19 06:36:47,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47" (1/1) ... [2020-08-19 06:36:47,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47" (1/1) ... [2020-08-19 06:36:47,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47" (1/1) ... [2020-08-19 06:36:47,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47" (1/1) ... [2020-08-19 06:36:47,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47" (1/1) ... [2020-08-19 06:36:47,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:36:47,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:36:47,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:36:47,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:36:47,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47" (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 06:36:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:36:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:36:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:36:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:36:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:36:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:36:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:36:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:36:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:36:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:36:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:36:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:36:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:36:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:36:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 06:36:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 06:36:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:36:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:36:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:36:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:36:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:36:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:36:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:36:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:36:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:36:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:36:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:36:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:36:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:36:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:36:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:36:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:36:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:36:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:36:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:36:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:36:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:36:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:36:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:36:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:36:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:36:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:36:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:36:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:36:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:36:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:36:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:36:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:36:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:36:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:36:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:36:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 06:36:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:36:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:36:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:36:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:36:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:36:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:36:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:36:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:36:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:36:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:36:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:36:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 06:36:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:36:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:36:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:36:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:36:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:36:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:36:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:36:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:36:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:36:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:36:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:36:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:36:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:36:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:36:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:36:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:36:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:36:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:36:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:36:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:36:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:36:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:36:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:36:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:36:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:36:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:36:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:36:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:36:48,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:36:48,757 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:36:48,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:36:48 BoogieIcfgContainer [2020-08-19 06:36:48,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:36:48,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:36:48,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:36:48,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:36:48,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:36:46" (1/3) ... [2020-08-19 06:36:48,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b6dd83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:36:48, skipping insertion in model container [2020-08-19 06:36:48,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:36:47" (2/3) ... [2020-08-19 06:36:48,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b6dd83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:36:48, skipping insertion in model container [2020-08-19 06:36:48,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:36:48" (3/3) ... [2020-08-19 06:36:48,771 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2020-08-19 06:36:48,781 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:36:48,789 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:36:48,802 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:36:48,822 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:36:48,822 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:36:48,822 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:36:48,822 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:36:48,822 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:36:48,823 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:36:48,823 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:36:48,823 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:36:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-19 06:36:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 06:36:48,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:48,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:36:48,854 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:48,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:48,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1991715745, now seen corresponding path program 1 times [2020-08-19 06:36:48,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:48,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649813531] [2020-08-19 06:36:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:49,567 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:49,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:49,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:49,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:49,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:49,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:36:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:49,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 06:36:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:49,696 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 06:36:49,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649813531] [2020-08-19 06:36:49,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:49,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:36:49,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270114392] [2020-08-19 06:36:49,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:36:49,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:49,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:36:49,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:36:49,723 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-08-19 06:36:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:36:50,812 INFO L93 Difference]: Finished difference Result 286 states and 375 transitions. [2020-08-19 06:36:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:36:50,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 06:36:50,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:36:50,830 INFO L225 Difference]: With dead ends: 286 [2020-08-19 06:36:50,830 INFO L226 Difference]: Without dead ends: 159 [2020-08-19 06:36:50,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:36:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-19 06:36:50,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-08-19 06:36:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 06:36:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2020-08-19 06:36:50,951 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 51 [2020-08-19 06:36:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:36:50,952 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2020-08-19 06:36:50,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:36:50,952 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2020-08-19 06:36:50,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:36:50,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:50,962 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 06:36:50,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:36:50,962 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:50,963 INFO L82 PathProgramCache]: Analyzing trace with hash -392602955, now seen corresponding path program 1 times [2020-08-19 06:36:50,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:50,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690612241] [2020-08-19 06:36:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:51,310 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:51,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:51,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 06:36:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:51,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:36:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:51,386 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 06:36:51,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690612241] [2020-08-19 06:36:51,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:51,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:36:51,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716596977] [2020-08-19 06:36:51,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:36:51,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:36:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:36:51,390 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand 5 states. [2020-08-19 06:36:51,812 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:36:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:36:52,667 INFO L93 Difference]: Finished difference Result 231 states and 286 transitions. [2020-08-19 06:36:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:36:52,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 06:36:52,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:36:52,672 INFO L225 Difference]: With dead ends: 231 [2020-08-19 06:36:52,672 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 06:36:52,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:36:52,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 06:36:52,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-19 06:36:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 06:36:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-19 06:36:52,714 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 52 [2020-08-19 06:36:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:36:52,714 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-19 06:36:52,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:36:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-19 06:36:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 06:36:52,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:52,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:36:52,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:36:52,717 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:52,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:52,718 INFO L82 PathProgramCache]: Analyzing trace with hash -368031557, now seen corresponding path program 1 times [2020-08-19 06:36:52,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:52,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454722242] [2020-08-19 06:36:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,100 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:36:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 06:36:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:36:53,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454722242] [2020-08-19 06:36:53,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:53,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:36:53,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340160571] [2020-08-19 06:36:53,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:36:53,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:53,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:36:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:36:53,185 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 9 states. [2020-08-19 06:36:53,526 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:36:53,832 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:54,107 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:54,335 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:36:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:36:55,527 INFO L93 Difference]: Finished difference Result 240 states and 301 transitions. [2020-08-19 06:36:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:36:55,531 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 06:36:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:36:55,535 INFO L225 Difference]: With dead ends: 240 [2020-08-19 06:36:55,536 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 06:36:55,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:36:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 06:36:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-19 06:36:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 06:36:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-19 06:36:55,571 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 56 [2020-08-19 06:36:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:36:55,572 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-19 06:36:55,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:36:55,572 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-19 06:36:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 06:36:55,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:55,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:36:55,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:36:55,574 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:55,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1230357120, now seen corresponding path program 1 times [2020-08-19 06:36:55,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:55,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772439926] [2020-08-19 06:36:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,855 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:55,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:36:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:36:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:36:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 06:36:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 06:36:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:55,974 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 06:36:55,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772439926] [2020-08-19 06:36:55,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:55,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 06:36:55,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238448515] [2020-08-19 06:36:55,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:36:55,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:55,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:36:55,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:36:55,977 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 7 states. [2020-08-19 06:36:56,347 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:36:57,561 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:36:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:36:58,264 INFO L93 Difference]: Finished difference Result 334 states and 423 transitions. [2020-08-19 06:36:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:36:58,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-19 06:36:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:36:58,269 INFO L225 Difference]: With dead ends: 334 [2020-08-19 06:36:58,270 INFO L226 Difference]: Without dead ends: 243 [2020-08-19 06:36:58,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:36:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-08-19 06:36:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 197. [2020-08-19 06:36:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-08-19 06:36:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2020-08-19 06:36:58,328 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 69 [2020-08-19 06:36:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:36:58,329 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2020-08-19 06:36:58,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:36:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2020-08-19 06:36:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 06:36:58,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:36:58,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:36:58,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:36:58,331 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:36:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:36:58,332 INFO L82 PathProgramCache]: Analyzing trace with hash 810215565, now seen corresponding path program 1 times [2020-08-19 06:36:58,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:36:58,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489683384] [2020-08-19 06:36:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:36:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,628 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:36:58,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:36:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:36:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:36:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:36:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:36:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:36:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:36:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:36:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:36:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:36:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:36:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 06:36:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 06:36:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:36:58,791 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 06:36:58,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489683384] [2020-08-19 06:36:58,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:36:58,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:36:58,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886653562] [2020-08-19 06:36:58,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:36:58,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:36:58,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:36:58,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:36:58,796 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand 9 states. [2020-08-19 06:36:59,177 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:00,375 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:00,665 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:00,912 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:01,146 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:02,133 INFO L93 Difference]: Finished difference Result 582 states and 737 transitions. [2020-08-19 06:37:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 06:37:02,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 06:37:02,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:02,141 INFO L225 Difference]: With dead ends: 582 [2020-08-19 06:37:02,142 INFO L226 Difference]: Without dead ends: 413 [2020-08-19 06:37:02,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 06:37:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-19 06:37:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 342. [2020-08-19 06:37:02,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-08-19 06:37:02,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 394 transitions. [2020-08-19 06:37:02,238 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 394 transitions. Word has length 83 [2020-08-19 06:37:02,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:02,238 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 394 transitions. [2020-08-19 06:37:02,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:37:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 394 transitions. [2020-08-19 06:37:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 06:37:02,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:02,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:02,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:37:02,241 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:02,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1817856655, now seen corresponding path program 1 times [2020-08-19 06:37:02,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:02,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362009087] [2020-08-19 06:37:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,535 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:02,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 06:37:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 06:37:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:02,659 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 06:37:02,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362009087] [2020-08-19 06:37:02,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:02,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:37:02,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869401697] [2020-08-19 06:37:02,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:37:02,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:02,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:37:02,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:37:02,662 INFO L87 Difference]: Start difference. First operand 342 states and 394 transitions. Second operand 10 states. [2020-08-19 06:37:03,059 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:04,199 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:04,431 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:04,672 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:04,930 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:06,025 INFO L93 Difference]: Finished difference Result 762 states and 947 transitions. [2020-08-19 06:37:06,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 06:37:06,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-19 06:37:06,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:06,031 INFO L225 Difference]: With dead ends: 762 [2020-08-19 06:37:06,031 INFO L226 Difference]: Without dead ends: 448 [2020-08-19 06:37:06,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 06:37:06,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-08-19 06:37:06,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 341. [2020-08-19 06:37:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-19 06:37:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 391 transitions. [2020-08-19 06:37:06,103 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 391 transitions. Word has length 87 [2020-08-19 06:37:06,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:06,103 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 391 transitions. [2020-08-19 06:37:06,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:37:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 391 transitions. [2020-08-19 06:37:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 06:37:06,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:06,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:06,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:37:06,106 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:06,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:06,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1046149773, now seen corresponding path program 1 times [2020-08-19 06:37:06,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:06,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803449330] [2020-08-19 06:37:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,344 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:06,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 06:37:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 06:37:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:06,485 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 06:37:06,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803449330] [2020-08-19 06:37:06,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:06,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:37:06,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502287156] [2020-08-19 06:37:06,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:37:06,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:06,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:37:06,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:37:06,488 INFO L87 Difference]: Start difference. First operand 341 states and 391 transitions. Second operand 10 states. [2020-08-19 06:37:07,799 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:08,055 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 06:37:08,311 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:08,555 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:09,593 INFO L93 Difference]: Finished difference Result 765 states and 956 transitions. [2020-08-19 06:37:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:37:09,597 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 06:37:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:09,601 INFO L225 Difference]: With dead ends: 765 [2020-08-19 06:37:09,601 INFO L226 Difference]: Without dead ends: 452 [2020-08-19 06:37:09,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 06:37:09,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-19 06:37:09,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 351. [2020-08-19 06:37:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-19 06:37:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2020-08-19 06:37:09,671 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 88 [2020-08-19 06:37:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:09,672 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2020-08-19 06:37:09,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:37:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2020-08-19 06:37:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 06:37:09,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:09,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:09,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:37:09,674 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:09,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1747749647, now seen corresponding path program 1 times [2020-08-19 06:37:09,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:09,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599414779] [2020-08-19 06:37:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:09,924 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:09,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:09,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:09,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:09,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:09,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:09,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:09,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:10,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:10,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:10,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:10,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 06:37:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:10,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 06:37:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:10,080 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 06:37:10,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599414779] [2020-08-19 06:37:10,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:10,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:37:10,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083782636] [2020-08-19 06:37:10,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:37:10,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:10,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:37:10,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:37:10,085 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 12 states. [2020-08-19 06:37:10,627 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:10,866 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:11,092 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:11,710 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:11,951 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:12,196 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:13,368 INFO L93 Difference]: Finished difference Result 789 states and 998 transitions. [2020-08-19 06:37:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:37:13,369 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-19 06:37:13,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:13,374 INFO L225 Difference]: With dead ends: 789 [2020-08-19 06:37:13,374 INFO L226 Difference]: Without dead ends: 466 [2020-08-19 06:37:13,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:37:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-19 06:37:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 359. [2020-08-19 06:37:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-08-19 06:37:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 409 transitions. [2020-08-19 06:37:13,452 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 409 transitions. Word has length 88 [2020-08-19 06:37:13,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:13,453 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 409 transitions. [2020-08-19 06:37:13,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:37:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 409 transitions. [2020-08-19 06:37:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 06:37:13,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:13,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:13,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:37:13,457 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:13,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:13,457 INFO L82 PathProgramCache]: Analyzing trace with hash -821736752, now seen corresponding path program 1 times [2020-08-19 06:37:13,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:13,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795452434] [2020-08-19 06:37:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,727 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:37:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:37:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 06:37:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 06:37:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:13,859 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 06:37:13,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795452434] [2020-08-19 06:37:13,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:13,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:37:13,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526664590] [2020-08-19 06:37:13,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:37:13,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:13,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:37:13,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:37:13,861 INFO L87 Difference]: Start difference. First operand 359 states and 409 transitions. Second operand 8 states. [2020-08-19 06:37:14,175 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:14,690 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:16,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:16,822 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2020-08-19 06:37:16,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 06:37:16,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-19 06:37:16,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:16,832 INFO L225 Difference]: With dead ends: 1108 [2020-08-19 06:37:16,832 INFO L226 Difference]: Without dead ends: 777 [2020-08-19 06:37:16,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 06:37:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-19 06:37:16,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 645. [2020-08-19 06:37:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-08-19 06:37:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 763 transitions. [2020-08-19 06:37:16,969 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 763 transitions. Word has length 88 [2020-08-19 06:37:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:16,971 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 763 transitions. [2020-08-19 06:37:16,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:37:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 763 transitions. [2020-08-19 06:37:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 06:37:16,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:16,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:16,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:37:16,977 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:16,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:16,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1708334166, now seen corresponding path program 1 times [2020-08-19 06:37:16,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:16,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707848881] [2020-08-19 06:37:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,267 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:17,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:37:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:37:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 06:37:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:37:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 06:37:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:17,356 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 06:37:17,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707848881] [2020-08-19 06:37:17,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:37:17,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:37:17,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788446618] [2020-08-19 06:37:17,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:37:17,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:17,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:37:17,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:37:17,358 INFO L87 Difference]: Start difference. First operand 645 states and 763 transitions. Second operand 8 states. [2020-08-19 06:37:17,744 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:20,020 INFO L93 Difference]: Finished difference Result 1272 states and 1654 transitions. [2020-08-19 06:37:20,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 06:37:20,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-19 06:37:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:20,030 INFO L225 Difference]: With dead ends: 1272 [2020-08-19 06:37:20,031 INFO L226 Difference]: Without dead ends: 1269 [2020-08-19 06:37:20,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-19 06:37:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-19 06:37:20,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1071. [2020-08-19 06:37:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-19 06:37:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1280 transitions. [2020-08-19 06:37:20,242 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1280 transitions. Word has length 92 [2020-08-19 06:37:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:20,242 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1280 transitions. [2020-08-19 06:37:20,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:37:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1280 transitions. [2020-08-19 06:37:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 06:37:20,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:20,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:37:20,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:37:20,248 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:20,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:20,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1546611492, now seen corresponding path program 1 times [2020-08-19 06:37:20,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:20,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959856163] [2020-08-19 06:37:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,620 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:37:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:37:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:37:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:37:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:37:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 06:37:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 06:37:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 06:37:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 06:37:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:20,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 06:37:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 06:37:21,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959856163] [2020-08-19 06:37:21,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:37:21,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 06:37:21,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984519652] [2020-08-19 06:37:21,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 06:37:21,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:21,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 06:37:21,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 06:37:21,020 INFO L87 Difference]: Start difference. First operand 1071 states and 1280 transitions. Second operand 19 states. [2020-08-19 06:37:21,893 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:22,248 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:37:22,523 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:37:22,774 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 06:37:23,426 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:24,446 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:24,813 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:26,061 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:26,330 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:26,605 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:26,870 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:27,128 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:27,383 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:27,670 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:27,922 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 06:37:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:28,612 INFO L93 Difference]: Finished difference Result 2024 states and 2482 transitions. [2020-08-19 06:37:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-19 06:37:28,613 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-19 06:37:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:28,620 INFO L225 Difference]: With dead ends: 2024 [2020-08-19 06:37:28,620 INFO L226 Difference]: Without dead ends: 981 [2020-08-19 06:37:28,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 06:37:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-08-19 06:37:28,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 858. [2020-08-19 06:37:28,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-08-19 06:37:28,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 979 transitions. [2020-08-19 06:37:28,790 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 979 transitions. Word has length 150 [2020-08-19 06:37:28,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:28,791 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 979 transitions. [2020-08-19 06:37:28,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 06:37:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 979 transitions. [2020-08-19 06:37:28,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 06:37:28,794 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:37:28,794 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 06:37:28,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:37:28,795 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:37:28,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:37:28,795 INFO L82 PathProgramCache]: Analyzing trace with hash 182941043, now seen corresponding path program 1 times [2020-08-19 06:37:28,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:37:28,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282518146] [2020-08-19 06:37:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:37:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,129 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:37:29,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:37:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:37:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:37:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:37:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:37:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:37:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:37:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:37:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:37:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:37:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:37:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 06:37:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:37:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:37:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:37:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 06:37:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 06:37:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:37:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 06:37:29,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282518146] [2020-08-19 06:37:29,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:37:29,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 06:37:29,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120091978] [2020-08-19 06:37:29,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:37:29,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:37:29,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:37:29,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:37:29,401 INFO L87 Difference]: Start difference. First operand 858 states and 979 transitions. Second operand 13 states. [2020-08-19 06:37:29,967 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:30,224 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:30,451 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:37:31,410 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:37:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:37:32,929 INFO L93 Difference]: Finished difference Result 1517 states and 1820 transitions. [2020-08-19 06:37:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 06:37:32,930 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-08-19 06:37:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:37:32,931 INFO L225 Difference]: With dead ends: 1517 [2020-08-19 06:37:32,931 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 06:37:32,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-19 06:37:32,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 06:37:32,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 06:37:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 06:37:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 06:37:32,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2020-08-19 06:37:32,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:37:32,936 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 06:37:32,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:37:32,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 06:37:32,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 06:37:32,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:37:32,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 06:37:33,983 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 06:37:34,213 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2020-08-19 06:37:34,875 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-19 06:37:35,164 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 06:37:35,407 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-19 06:37:36,072 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-19 06:37:37,054 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 297 [2020-08-19 06:37:38,130 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 06:37:38,731 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-19 06:37:38,923 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-19 06:37:39,751 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-19 06:37:40,677 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 310 [2020-08-19 06:37:42,472 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 25 [2020-08-19 06:37:42,641 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 1 [2020-08-19 06:37:42,810 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 1 [2020-08-19 06:37:42,987 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 27 [2020-08-19 06:37:43,525 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 24 [2020-08-19 06:37:44,570 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 188 DAG size of output: 46