/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:26:39,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:26:39,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:26:39,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:26:39,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:26:39,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:26:39,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:26:39,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:26:39,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:26:39,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:26:39,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:26:39,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:26:39,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:26:39,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:26:39,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:26:39,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:26:39,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:26:39,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:26:39,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:26:39,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:26:39,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:26:39,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:26:39,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:26:39,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:26:39,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:26:39,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:26:39,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:26:39,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:26:39,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:26:39,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:26:39,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:26:39,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:26:39,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:26:39,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:26:39,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:26:39,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:26:39,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:26:39,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:26:39,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:26:39,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:26:39,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:26:39,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:26:39,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:26:39,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:26:39,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:26:39,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:26:39,426 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:26:39,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:26:39,426 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:26:39,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:26:39,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:26:39,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:26:39,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:26:39,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:26:39,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:26:39,428 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:26:39,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:26:39,428 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:26:39,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:26:39,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:26:39,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:26:39,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:26:39,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:26:39,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:26:39,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:26:39,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:26:39,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:26:39,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:26:39,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:26:39,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:26:39,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:26:39,431 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 -> false [2020-08-18 10:26:39,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:26:39,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:26:39,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:26:39,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:26:39,767 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:26:39,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2020-08-18 10:26:39,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a07748a42/9d62cfd7f5ed4e60a86bf020f82ccb3b/FLAG79413a571 [2020-08-18 10:26:40,396 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:26:40,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product38.cil.c [2020-08-18 10:26:40,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a07748a42/9d62cfd7f5ed4e60a86bf020f82ccb3b/FLAG79413a571 [2020-08-18 10:26:40,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a07748a42/9d62cfd7f5ed4e60a86bf020f82ccb3b [2020-08-18 10:26:40,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:26:40,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:26:40,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:26:40,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:26:40,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:26:40,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:26:40" (1/1) ... [2020-08-18 10:26:40,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12af90c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:40, skipping insertion in model container [2020-08-18 10:26:40,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:26:40" (1/1) ... [2020-08-18 10:26:40,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:26:40,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:26:41,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:26:41,247 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:26:41,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:26:41,412 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:26:41,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41 WrapperNode [2020-08-18 10:26:41,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:26:41,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:26:41,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:26:41,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:26:41,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41" (1/1) ... [2020-08-18 10:26:41,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41" (1/1) ... [2020-08-18 10:26:41,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41" (1/1) ... [2020-08-18 10:26:41,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41" (1/1) ... [2020-08-18 10:26:41,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41" (1/1) ... [2020-08-18 10:26:41,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41" (1/1) ... [2020-08-18 10:26:41,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41" (1/1) ... [2020-08-18 10:26:41,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:26:41,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:26:41,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:26:41,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:26:41,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:26:41,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:26:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:26:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:26:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:26:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:26:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:26:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:26:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:26:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:26:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 10:26:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 10:26:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 10:26:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:26:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:26:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:26:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:26:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:26:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:26:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:26:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:26:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:26:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:26:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:26:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:26:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:26:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:26:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:26:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:26:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:26:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:26:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:26:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:26:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:26:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:26:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:26:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:26:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:26:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:26:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:26:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:26:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:26:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:26:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:26:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:26:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 10:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:26:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 10:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 10:26:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:26:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:26:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:26:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:26:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:26:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:26:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:26:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:26:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:26:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:26:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:26:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:26:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:26:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:26:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:26:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:26:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:26:42,692 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:26:42,693 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:26:42,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:26:42 BoogieIcfgContainer [2020-08-18 10:26:42,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:26:42,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:26:42,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:26:42,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:26:42,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:26:40" (1/3) ... [2020-08-18 10:26:42,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e31aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:26:42, skipping insertion in model container [2020-08-18 10:26:42,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:41" (2/3) ... [2020-08-18 10:26:42,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e31aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:26:42, skipping insertion in model container [2020-08-18 10:26:42,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:26:42" (3/3) ... [2020-08-18 10:26:42,713 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product38.cil.c [2020-08-18 10:26:42,723 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:26:42,734 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:26:42,748 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:26:42,776 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:26:42,776 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:26:42,777 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:26:42,777 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:26:42,777 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:26:42,777 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:26:42,778 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:26:42,778 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:26:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-18 10:26:42,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 10:26:42,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:42,812 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:26:42,812 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:42,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1109188308, now seen corresponding path program 1 times [2020-08-18 10:26:42,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:42,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681592243] [2020-08-18 10:26:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,519 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:43,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:26:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:26:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:26:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:43,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681592243] [2020-08-18 10:26:43,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:43,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:26:43,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514748795] [2020-08-18 10:26:43,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:26:43,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:43,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:26:43,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:26:43,661 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2020-08-18 10:26:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:44,849 INFO L93 Difference]: Finished difference Result 309 states and 395 transitions. [2020-08-18 10:26:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 10:26:44,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 10:26:44,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:44,866 INFO L225 Difference]: With dead ends: 309 [2020-08-18 10:26:44,867 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 10:26:44,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:26:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 10:26:44,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 140. [2020-08-18 10:26:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 10:26:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 163 transitions. [2020-08-18 10:26:44,972 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 163 transitions. Word has length 59 [2020-08-18 10:26:44,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:44,973 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 163 transitions. [2020-08-18 10:26:44,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:26:44,974 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 163 transitions. [2020-08-18 10:26:44,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 10:26:44,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:44,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:26:44,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:26:44,984 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash 813843432, now seen corresponding path program 1 times [2020-08-18 10:26:44,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:44,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90726734] [2020-08-18 10:26:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,362 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:45,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:26:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:26:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 10:26:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:45,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90726734] [2020-08-18 10:26:45,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:45,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:26:45,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82137731] [2020-08-18 10:26:45,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:26:45,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:45,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:26:45,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:26:45,422 INFO L87 Difference]: Start difference. First operand 140 states and 163 transitions. Second operand 5 states. [2020-08-18 10:26:45,907 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:46,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:46,852 INFO L93 Difference]: Finished difference Result 250 states and 303 transitions. [2020-08-18 10:26:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 10:26:46,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 10:26:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:46,856 INFO L225 Difference]: With dead ends: 250 [2020-08-18 10:26:46,857 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 10:26:46,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:26:46,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 10:26:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2020-08-18 10:26:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-18 10:26:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-08-18 10:26:46,902 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 60 [2020-08-18 10:26:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:46,902 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-08-18 10:26:46,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:26:46,903 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-08-18 10:26:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:26:46,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:46,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:26:46,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:26:46,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash 605286682, now seen corresponding path program 1 times [2020-08-18 10:26:46,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:46,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060267573] [2020-08-18 10:26:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,270 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:26:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:26:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 10:26:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:47,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060267573] [2020-08-18 10:26:47,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:47,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:26:47,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749540270] [2020-08-18 10:26:47,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:26:47,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:47,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:26:47,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:26:47,378 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 9 states. [2020-08-18 10:26:47,721 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:26:48,063 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:48,326 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:48,558 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:49,834 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2020-08-18 10:26:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:26:49,836 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 10:26:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:49,840 INFO L225 Difference]: With dead ends: 263 [2020-08-18 10:26:49,840 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 10:26:49,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:26:49,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 10:26:49,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2020-08-18 10:26:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-18 10:26:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2020-08-18 10:26:49,886 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 65 [2020-08-18 10:26:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:49,886 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2020-08-18 10:26:49,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:26:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2020-08-18 10:26:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 10:26:49,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:49,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:26:49,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:26:49,889 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:49,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:49,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1239264208, now seen corresponding path program 1 times [2020-08-18 10:26:49,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:49,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983359888] [2020-08-18 10:26:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,202 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:26:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:26:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 10:26:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:26:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:50,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983359888] [2020-08-18 10:26:50,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:50,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:26:50,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214662538] [2020-08-18 10:26:50,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:26:50,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:50,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:26:50,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:26:50,304 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand 7 states. [2020-08-18 10:26:50,665 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:26:52,064 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:52,637 INFO L93 Difference]: Finished difference Result 367 states and 456 transitions. [2020-08-18 10:26:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:26:52,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-18 10:26:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:52,643 INFO L225 Difference]: With dead ends: 367 [2020-08-18 10:26:52,643 INFO L226 Difference]: Without dead ends: 264 [2020-08-18 10:26:52,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:26:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-18 10:26:52,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 218. [2020-08-18 10:26:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 10:26:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 249 transitions. [2020-08-18 10:26:52,690 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 249 transitions. Word has length 78 [2020-08-18 10:26:52,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:52,691 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 249 transitions. [2020-08-18 10:26:52,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:26:52,691 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 249 transitions. [2020-08-18 10:26:52,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 10:26:52,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:52,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:26:52,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:26:52,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:52,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:52,694 INFO L82 PathProgramCache]: Analyzing trace with hash 462053503, now seen corresponding path program 1 times [2020-08-18 10:26:52,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:52,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785698962] [2020-08-18 10:26:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,005 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:53,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:26:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:26:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 10:26:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 10:26:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 10:26:53,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785698962] [2020-08-18 10:26:53,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:53,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:26:53,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286829155] [2020-08-18 10:26:53,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:26:53,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:53,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:26:53,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:26:53,187 INFO L87 Difference]: Start difference. First operand 218 states and 249 transitions. Second operand 9 states. [2020-08-18 10:26:53,543 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:26:54,216 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:54,873 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:26:55,177 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:55,689 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:55,923 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:56,482 INFO L93 Difference]: Finished difference Result 453 states and 550 transitions. [2020-08-18 10:26:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:26:56,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 10:26:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:56,486 INFO L225 Difference]: With dead ends: 453 [2020-08-18 10:26:56,487 INFO L226 Difference]: Without dead ends: 263 [2020-08-18 10:26:56,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:26:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-18 10:26:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 217. [2020-08-18 10:26:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-08-18 10:26:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 246 transitions. [2020-08-18 10:26:56,530 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 246 transitions. Word has length 92 [2020-08-18 10:26:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:56,531 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 246 transitions. [2020-08-18 10:26:56,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:26:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 246 transitions. [2020-08-18 10:26:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 10:26:56,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:56,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:26:56,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:26:56,533 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:56,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:56,534 INFO L82 PathProgramCache]: Analyzing trace with hash -440444759, now seen corresponding path program 1 times [2020-08-18 10:26:56,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:56,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181567612] [2020-08-18 10:26:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,852 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:56,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:26:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:26:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 10:26:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 10:26:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:57,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181567612] [2020-08-18 10:26:57,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:57,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:26:57,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282109742] [2020-08-18 10:26:57,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:26:57,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:57,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:26:57,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:26:57,036 INFO L87 Difference]: Start difference. First operand 217 states and 246 transitions. Second operand 9 states. [2020-08-18 10:26:57,993 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:58,226 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:26:58,461 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:58,717 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:59,378 INFO L93 Difference]: Finished difference Result 451 states and 544 transitions. [2020-08-18 10:26:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:26:59,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 10:26:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:59,382 INFO L225 Difference]: With dead ends: 451 [2020-08-18 10:26:59,382 INFO L226 Difference]: Without dead ends: 262 [2020-08-18 10:26:59,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:26:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-08-18 10:26:59,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 222. [2020-08-18 10:26:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-18 10:26:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 251 transitions. [2020-08-18 10:26:59,429 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 251 transitions. Word has length 93 [2020-08-18 10:26:59,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:59,430 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 251 transitions. [2020-08-18 10:26:59,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:26:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 251 transitions. [2020-08-18 10:26:59,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 10:26:59,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:59,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:26:59,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:26:59,432 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:59,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:59,433 INFO L82 PathProgramCache]: Analyzing trace with hash 261155115, now seen corresponding path program 1 times [2020-08-18 10:26:59,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:59,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024270675] [2020-08-18 10:26:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,696 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:26:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:26:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 10:26:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 10:26:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:59,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024270675] [2020-08-18 10:26:59,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:59,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 10:26:59,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725211638] [2020-08-18 10:26:59,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:26:59,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:59,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:26:59,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:26:59,864 INFO L87 Difference]: Start difference. First operand 222 states and 251 transitions. Second operand 11 states. [2020-08-18 10:27:00,320 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:00,569 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:00,806 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:01,519 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:01,760 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:02,013 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:02,797 INFO L93 Difference]: Finished difference Result 463 states and 564 transitions. [2020-08-18 10:27:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:27:02,803 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 10:27:02,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:02,806 INFO L225 Difference]: With dead ends: 463 [2020-08-18 10:27:02,806 INFO L226 Difference]: Without dead ends: 269 [2020-08-18 10:27:02,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:27:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-18 10:27:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-08-18 10:27:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-18 10:27:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2020-08-18 10:27:02,848 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 93 [2020-08-18 10:27:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:02,848 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2020-08-18 10:27:02,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:27:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2020-08-18 10:27:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 10:27:02,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:02,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:27:02,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:27:02,851 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:02,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:02,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1986636012, now seen corresponding path program 1 times [2020-08-18 10:27:02,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:02,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82762735] [2020-08-18 10:27:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,125 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:27:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 10:27:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 10:27:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 10:27:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:27:03,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82762735] [2020-08-18 10:27:03,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:27:03,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:27:03,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258037013] [2020-08-18 10:27:03,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:27:03,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:03,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:27:03,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:27:03,262 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand 7 states. [2020-08-18 10:27:03,775 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:04,419 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:06,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:06,139 INFO L93 Difference]: Finished difference Result 645 states and 802 transitions. [2020-08-18 10:27:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:27:06,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-18 10:27:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:06,144 INFO L225 Difference]: With dead ends: 645 [2020-08-18 10:27:06,144 INFO L226 Difference]: Without dead ends: 447 [2020-08-18 10:27:06,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:27:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-08-18 10:27:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 405. [2020-08-18 10:27:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-08-18 10:27:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 471 transitions. [2020-08-18 10:27:06,218 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 471 transitions. Word has length 93 [2020-08-18 10:27:06,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:06,218 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 471 transitions. [2020-08-18 10:27:06,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:27:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 471 transitions. [2020-08-18 10:27:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 10:27:06,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:06,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:27:06,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:27:06,221 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:06,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1429929390, now seen corresponding path program 1 times [2020-08-18 10:27:06,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:06,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404765167] [2020-08-18 10:27:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,616 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:06,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:27:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 10:27:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 10:27:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 10:27:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:27:06,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404765167] [2020-08-18 10:27:06,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:27:06,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:27:06,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968390378] [2020-08-18 10:27:06,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:27:06,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:06,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:27:06,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:27:06,816 INFO L87 Difference]: Start difference. First operand 405 states and 471 transitions. Second operand 12 states. [2020-08-18 10:27:07,472 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:08,136 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:09,146 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:09,456 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:09,700 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:09,957 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:10,237 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:11,324 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:11,590 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:12,234 INFO L93 Difference]: Finished difference Result 1123 states and 1390 transitions. [2020-08-18 10:27:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 10:27:12,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-18 10:27:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:12,240 INFO L225 Difference]: With dead ends: 1123 [2020-08-18 10:27:12,240 INFO L226 Difference]: Without dead ends: 820 [2020-08-18 10:27:12,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 10:27:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-18 10:27:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 698. [2020-08-18 10:27:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 698 states. [2020-08-18 10:27:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 804 transitions. [2020-08-18 10:27:12,393 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 804 transitions. Word has length 97 [2020-08-18 10:27:12,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:12,394 INFO L479 AbstractCegarLoop]: Abstraction has 698 states and 804 transitions. [2020-08-18 10:27:12,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:27:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 804 transitions. [2020-08-18 10:27:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 10:27:12,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:12,396 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:27:12,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:27:12,397 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:12,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:12,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1557984819, now seen corresponding path program 1 times [2020-08-18 10:27:12,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:12,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765384653] [2020-08-18 10:27:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,776 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:27:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:27:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:27:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 10:27:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 10:27:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 10:27:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:27:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 10:27:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 10:27:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 10:27:13,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765384653] [2020-08-18 10:27:13,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:27:13,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 10:27:13,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115658621] [2020-08-18 10:27:13,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 10:27:13,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:13,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 10:27:13,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:27:13,167 INFO L87 Difference]: Start difference. First operand 698 states and 804 transitions. Second operand 16 states. [2020-08-18 10:27:13,833 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:14,145 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:27:14,440 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:27:14,698 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:27:15,376 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:15,650 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:16,401 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:16,752 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:27:17,582 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:17,821 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:27:18,097 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:18,387 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:18,918 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:19,300 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:19,641 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:27:20,248 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:20,508 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:27:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:21,028 INFO L93 Difference]: Finished difference Result 1539 states and 1827 transitions. [2020-08-18 10:27:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 10:27:21,028 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-18 10:27:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:21,034 INFO L225 Difference]: With dead ends: 1539 [2020-08-18 10:27:21,034 INFO L226 Difference]: Without dead ends: 939 [2020-08-18 10:27:21,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 10:27:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-18 10:27:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 846. [2020-08-18 10:27:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-08-18 10:27:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 982 transitions. [2020-08-18 10:27:21,178 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 982 transitions. Word has length 157 [2020-08-18 10:27:21,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:21,179 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 982 transitions. [2020-08-18 10:27:21,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 10:27:21,179 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 982 transitions. [2020-08-18 10:27:21,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-18 10:27:21,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:21,185 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 10:27:21,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:27:21,186 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2097362584, now seen corresponding path program 1 times [2020-08-18 10:27:21,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:21,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551203166] [2020-08-18 10:27:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,503 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:21,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:27:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:27:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:27:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 10:27:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:27:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:27:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-18 10:27:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:27:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:27:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-18 10:27:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 10:27:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 10:27:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-18 10:27:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 10:27:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-18 10:27:21,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551203166] [2020-08-18 10:27:21,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:27:21,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 10:27:21,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516087050] [2020-08-18 10:27:21,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 10:27:21,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:21,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 10:27:21,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:27:21,988 INFO L87 Difference]: Start difference. First operand 846 states and 982 transitions. Second operand 15 states. [2020-08-18 10:27:23,476 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:23,757 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:24,018 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:24,275 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:25,629 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:26,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:26,213 INFO L93 Difference]: Finished difference Result 2234 states and 2701 transitions. [2020-08-18 10:27:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 10:27:26,214 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-18 10:27:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:26,222 INFO L225 Difference]: With dead ends: 2234 [2020-08-18 10:27:26,222 INFO L226 Difference]: Without dead ends: 1321 [2020-08-18 10:27:26,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 10:27:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-08-18 10:27:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1119. [2020-08-18 10:27:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-08-18 10:27:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1329 transitions. [2020-08-18 10:27:26,423 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1329 transitions. Word has length 277 [2020-08-18 10:27:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:26,424 INFO L479 AbstractCegarLoop]: Abstraction has 1119 states and 1329 transitions. [2020-08-18 10:27:26,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 10:27:26,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1329 transitions. [2020-08-18 10:27:26,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-18 10:27:26,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:26,431 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 10:27:26,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:27:26,431 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:26,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:26,432 INFO L82 PathProgramCache]: Analyzing trace with hash -924921395, now seen corresponding path program 1 times [2020-08-18 10:27:26,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:26,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770172905] [2020-08-18 10:27:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,697 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:26,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:27:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:27:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:27:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 10:27:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:27:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:27:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 10:27:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-18 10:27:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:27:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:27:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-18 10:27:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 10:27:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 10:27:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 10:27:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 10:27:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 91 proven. 36 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-08-18 10:27:27,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770172905] [2020-08-18 10:27:27,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:27:27,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 10:27:27,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115273418] [2020-08-18 10:27:27,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 10:27:27,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:27,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 10:27:27,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:27:27,169 INFO L87 Difference]: Start difference. First operand 1119 states and 1329 transitions. Second operand 16 states. [2020-08-18 10:27:27,814 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:28,121 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:28,367 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:28,605 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:29,288 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:30,028 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:30,389 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:30,638 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:31,284 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:32,079 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:32,337 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:32,913 INFO L93 Difference]: Finished difference Result 2119 states and 2555 transitions. [2020-08-18 10:27:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 10:27:32,914 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-18 10:27:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:32,921 INFO L225 Difference]: With dead ends: 2119 [2020-08-18 10:27:32,922 INFO L226 Difference]: Without dead ends: 1121 [2020-08-18 10:27:32,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 10:27:32,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2020-08-18 10:27:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1071. [2020-08-18 10:27:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-18 10:27:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1255 transitions. [2020-08-18 10:27:33,135 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1255 transitions. Word has length 283 [2020-08-18 10:27:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:33,135 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1255 transitions. [2020-08-18 10:27:33,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 10:27:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1255 transitions. [2020-08-18 10:27:33,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-18 10:27:33,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:33,141 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 10:27:33,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 10:27:33,142 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:33,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1544148796, now seen corresponding path program 1 times [2020-08-18 10:27:33,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:33,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734514752] [2020-08-18 10:27:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,502 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:33,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:27:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:27:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:27:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 10:27:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:27:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:27:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 10:27:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-18 10:27:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:27:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:27:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-18 10:27:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-18 10:27:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-18 10:27:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-18 10:27:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-08-18 10:27:33,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734514752] [2020-08-18 10:27:33,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:27:33,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 10:27:33,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280528013] [2020-08-18 10:27:33,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 10:27:33,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:33,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 10:27:33,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:27:33,901 INFO L87 Difference]: Start difference. First operand 1071 states and 1255 transitions. Second operand 14 states. [2020-08-18 10:27:34,846 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:35,653 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:38,051 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:38,346 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:38,623 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192