/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_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:44:38,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:44:38,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:44:38,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:44:38,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:44:39,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:44:39,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:44:39,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:44:39,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:44:39,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:44:39,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:44:39,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:44:39,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:44:39,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:44:39,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:44:39,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:44:39,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:44:39,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:44:39,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:44:39,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:44:39,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:44:39,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:44:39,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:44:39,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:44:39,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:44:39,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:44:39,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:44:39,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:44:39,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:44:39,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:44:39,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:44:39,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:44:39,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:44:39,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:44:39,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:44:39,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:44:39,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:44:39,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:44:39,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:44:39,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:44:39,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:44:39,065 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 [2020-08-27 21:44:39,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:44:39,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:44:39,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:44:39,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:44:39,124 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:44:39,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:44:39,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:44:39,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:44:39,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:44:39,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:44:39,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:44:39,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:44:39,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:44:39,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:44:39,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:44:39,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:44:39,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:44:39,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:44:39,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:44:39,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:44:39,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:44:39,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:44:39,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:44:39,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:44:39,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:44:39,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:44:39,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:44:39,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:44:39,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:44:39,131 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 [2020-08-27 21:44:39,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:44:39,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:44:39,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:44:39,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:44:39,625 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:44:39,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2020-08-27 21:44:39,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9fbb3f8a/24392f6c0596423695eb89d8b20030ec/FLAG8b43d94c8 [2020-08-27 21:44:40,350 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:44:40,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2020-08-27 21:44:40,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9fbb3f8a/24392f6c0596423695eb89d8b20030ec/FLAG8b43d94c8 [2020-08-27 21:44:40,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9fbb3f8a/24392f6c0596423695eb89d8b20030ec [2020-08-27 21:44:40,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:44:40,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:44:40,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:44:40,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:44:40,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:44:40,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:44:40" (1/1) ... [2020-08-27 21:44:40,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfafcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:40, skipping insertion in model container [2020-08-27 21:44:40,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:44:40" (1/1) ... [2020-08-27 21:44:40,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:44:40,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:44:41,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:44:41,024 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:44:41,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:44:41,327 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:44:41,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41 WrapperNode [2020-08-27 21:44:41,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:44:41,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:44:41,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:44:41,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:44:41,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41" (1/1) ... [2020-08-27 21:44:41,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41" (1/1) ... [2020-08-27 21:44:41,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41" (1/1) ... [2020-08-27 21:44:41,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41" (1/1) ... [2020-08-27 21:44:41,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41" (1/1) ... [2020-08-27 21:44:41,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41" (1/1) ... [2020-08-27 21:44:41,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41" (1/1) ... [2020-08-27 21:44:41,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:44:41,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:44:41,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:44:41,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:44:41,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41" (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 [2020-08-27 21:44:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:44:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:44:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:44:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:44:41,555 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:44:41,555 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:44:41,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:44:41,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:44:41,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:44:41,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:44:41,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:44:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:44:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:44:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:44:41,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:44:41,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:44:41,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:44:41,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:44:41,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:44:41,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:44:41,560 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:44:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:44:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:44:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:44:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:44:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:44:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:44:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:44:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:44:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:44:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:44:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:44:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:44:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:44:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:44:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:44:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:44:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:44:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:44:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:44:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:44:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:44:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:44:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:44:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:44:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:44:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:44:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:44:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:44:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:44:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:44:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:44:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:44:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:44:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:44:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:44:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:44:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:44:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:44:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:44:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:44:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:44:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:44:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:44:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:44:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:44:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:44:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:44:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:44:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:44:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:44:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:44:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:44:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:44:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:44:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:44:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:44:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:44:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:44:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:44:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:44:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:44:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:44:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:44:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:44:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:44:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:44:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:44:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:44:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:44:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:44:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:44:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:44:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:44:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:44:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:44:42,678 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:44:42,678 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:44:42,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:44:42 BoogieIcfgContainer [2020-08-27 21:44:42,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:44:42,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:44:42,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:44:42,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:44:42,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:44:40" (1/3) ... [2020-08-27 21:44:42,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e6777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:44:42, skipping insertion in model container [2020-08-27 21:44:42,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:41" (2/3) ... [2020-08-27 21:44:42,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e6777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:44:42, skipping insertion in model container [2020-08-27 21:44:42,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:44:42" (3/3) ... [2020-08-27 21:44:42,697 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product45.cil.c [2020-08-27 21:44:42,710 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:44:42,721 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:44:42,744 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:44:42,778 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:44:42,778 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:44:42,778 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:44:42,779 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:44:42,779 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:44:42,779 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:44:42,779 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:44:42,779 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:44:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-27 21:44:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-27 21:44:42,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:42,823 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] [2020-08-27 21:44:42,823 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:42,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:42,832 INFO L82 PathProgramCache]: Analyzing trace with hash -587014934, now seen corresponding path program 1 times [2020-08-27 21:44:42,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:42,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528441120] [2020-08-27 21:44:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,568 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:43,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:44:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:44:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:44:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:43,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528441120] [2020-08-27 21:44:43,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:43,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:44:43,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390104265] [2020-08-27 21:44:43,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:44:43,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:43,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:44:43,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:44:43,720 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-08-27 21:44:44,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:44,887 INFO L93 Difference]: Finished difference Result 315 states and 403 transitions. [2020-08-27 21:44:44,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:44:44,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-27 21:44:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:44,907 INFO L225 Difference]: With dead ends: 315 [2020-08-27 21:44:44,908 INFO L226 Difference]: Without dead ends: 173 [2020-08-27 21:44:44,913 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 [2020-08-27 21:44:44,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-27 21:44:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 143. [2020-08-27 21:44:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-27 21:44:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-08-27 21:44:45,018 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 59 [2020-08-27 21:44:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:45,018 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-08-27 21:44:45,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:44:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-08-27 21:44:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-27 21:44:45,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:45,023 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] [2020-08-27 21:44:45,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:44:45,024 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash 272490530, now seen corresponding path program 1 times [2020-08-27 21:44:45,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:45,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218100640] [2020-08-27 21:44:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,548 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:45,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:44:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-27 21:44:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-27 21:44:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:45,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218100640] [2020-08-27 21:44:45,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:45,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:44:45,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201133504] [2020-08-27 21:44:45,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:44:45,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:45,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:44:45,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:44:45,672 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 9 states. [2020-08-27 21:44:46,065 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:46,447 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:46,765 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:47,076 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:48,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:48,589 INFO L93 Difference]: Finished difference Result 288 states and 358 transitions. [2020-08-27 21:44:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:44:48,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-27 21:44:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:48,594 INFO L225 Difference]: With dead ends: 288 [2020-08-27 21:44:48,595 INFO L226 Difference]: Without dead ends: 173 [2020-08-27 21:44:48,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:44:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-27 21:44:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 143. [2020-08-27 21:44:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-27 21:44:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2020-08-27 21:44:48,664 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 64 [2020-08-27 21:44:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:48,665 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2020-08-27 21:44:48,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:44:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2020-08-27 21:44:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-27 21:44:48,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:48,668 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] [2020-08-27 21:44:48,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:44:48,669 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:48,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1080536843, now seen corresponding path program 1 times [2020-08-27 21:44:48,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:48,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251757938] [2020-08-27 21:44:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,018 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:44:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:44:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-27 21:44:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-27 21:44:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:49,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251757938] [2020-08-27 21:44:49,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:49,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:44:49,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049388388] [2020-08-27 21:44:49,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:44:49,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:49,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:44:49,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:44:49,189 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 7 states. [2020-08-27 21:44:49,574 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:51,345 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:51,979 INFO L93 Difference]: Finished difference Result 433 states and 561 transitions. [2020-08-27 21:44:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:44:51,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-27 21:44:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:51,987 INFO L225 Difference]: With dead ends: 433 [2020-08-27 21:44:51,987 INFO L226 Difference]: Without dead ends: 318 [2020-08-27 21:44:51,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:44:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-08-27 21:44:52,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 257. [2020-08-27 21:44:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-08-27 21:44:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 306 transitions. [2020-08-27 21:44:52,052 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 306 transitions. Word has length 77 [2020-08-27 21:44:52,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:52,053 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 306 transitions. [2020-08-27 21:44:52,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:44:52,053 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 306 transitions. [2020-08-27 21:44:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-27 21:44:52,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:52,056 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] [2020-08-27 21:44:52,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:44:52,056 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:52,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1912690952, now seen corresponding path program 1 times [2020-08-27 21:44:52,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:52,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342171973] [2020-08-27 21:44:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,422 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:52,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:44:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:44:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:44:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:44:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-27 21:44:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-27 21:44:52,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342171973] [2020-08-27 21:44:52,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:52,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:44:52,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352927889] [2020-08-27 21:44:52,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:44:52,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:52,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:44:52,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:44:52,635 INFO L87 Difference]: Start difference. First operand 257 states and 306 transitions. Second operand 9 states. [2020-08-27 21:44:53,064 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:53,777 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:54,865 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:55,201 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:55,677 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:55,992 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:56,642 INFO L93 Difference]: Finished difference Result 536 states and 678 transitions. [2020-08-27 21:44:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:44:56,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-27 21:44:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:56,648 INFO L225 Difference]: With dead ends: 536 [2020-08-27 21:44:56,649 INFO L226 Difference]: Without dead ends: 307 [2020-08-27 21:44:56,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:44:56,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-27 21:44:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 256. [2020-08-27 21:44:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-08-27 21:44:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 303 transitions. [2020-08-27 21:44:56,706 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 303 transitions. Word has length 91 [2020-08-27 21:44:56,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:56,707 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 303 transitions. [2020-08-27 21:44:56,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:44:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 303 transitions. [2020-08-27 21:44:56,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-27 21:44:56,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:56,709 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, 1, 1, 1, 1, 1, 1] [2020-08-27 21:44:56,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:44:56,710 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:56,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:56,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1692072858, now seen corresponding path program 1 times [2020-08-27 21:44:56,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:56,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798130733] [2020-08-27 21:44:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,006 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:57,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:44:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:44:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:44:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:44:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 21:44:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:57,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798130733] [2020-08-27 21:44:57,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:57,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:44:57,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138486033] [2020-08-27 21:44:57,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:44:57,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:57,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:44:57,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:44:57,217 INFO L87 Difference]: Start difference. First operand 256 states and 303 transitions. Second operand 10 states. [2020-08-27 21:44:57,978 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:58,739 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:59,049 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:44:59,374 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:59,707 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:00,624 INFO L93 Difference]: Finished difference Result 498 states and 618 transitions. [2020-08-27 21:45:00,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-27 21:45:00,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-27 21:45:00,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:00,635 INFO L225 Difference]: With dead ends: 498 [2020-08-27 21:45:00,635 INFO L226 Difference]: Without dead ends: 270 [2020-08-27 21:45:00,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:45:00,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-27 21:45:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 231. [2020-08-27 21:45:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-27 21:45:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2020-08-27 21:45:00,704 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 103 [2020-08-27 21:45:00,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:00,705 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2020-08-27 21:45:00,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:45:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2020-08-27 21:45:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-27 21:45:00,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:00,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:45:00,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:45:00,707 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:00,708 INFO L82 PathProgramCache]: Analyzing trace with hash 304023506, now seen corresponding path program 1 times [2020-08-27 21:45:00,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:00,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138572559] [2020-08-27 21:45:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,027 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:45:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:45:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-27 21:45:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:45:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:01,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:01,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138572559] [2020-08-27 21:45:01,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:01,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 21:45:01,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403468232] [2020-08-27 21:45:01,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:45:01,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:01,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:45:01,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:45:01,207 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand 11 states. [2020-08-27 21:45:01,822 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:02,153 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:02,473 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:03,312 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:03,621 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:03,955 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:04,997 INFO L93 Difference]: Finished difference Result 478 states and 578 transitions. [2020-08-27 21:45:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:45:04,999 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-27 21:45:05,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:05,002 INFO L225 Difference]: With dead ends: 478 [2020-08-27 21:45:05,002 INFO L226 Difference]: Without dead ends: 275 [2020-08-27 21:45:05,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:45:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-27 21:45:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 235. [2020-08-27 21:45:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-27 21:45:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 265 transitions. [2020-08-27 21:45:05,043 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 265 transitions. Word has length 107 [2020-08-27 21:45:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:05,043 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 265 transitions. [2020-08-27 21:45:05,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:45:05,043 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 265 transitions. [2020-08-27 21:45:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-27 21:45:05,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:05,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:45:05,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:45:05,045 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:05,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:05,046 INFO L82 PathProgramCache]: Analyzing trace with hash 63483377, now seen corresponding path program 1 times [2020-08-27 21:45:05,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:05,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038961114] [2020-08-27 21:45:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,386 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:05,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:45:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:45:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-27 21:45:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:45:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:05,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038961114] [2020-08-27 21:45:05,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:05,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:45:05,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366441581] [2020-08-27 21:45:05,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:45:05,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:05,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:45:05,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:45:05,586 INFO L87 Difference]: Start difference. First operand 235 states and 265 transitions. Second operand 7 states. [2020-08-27 21:45:05,949 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:06,526 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:08,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:08,578 INFO L93 Difference]: Finished difference Result 647 states and 802 transitions. [2020-08-27 21:45:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:45:08,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-08-27 21:45:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:08,583 INFO L225 Difference]: With dead ends: 647 [2020-08-27 21:45:08,583 INFO L226 Difference]: Without dead ends: 440 [2020-08-27 21:45:08,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:45:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-08-27 21:45:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 402. [2020-08-27 21:45:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-08-27 21:45:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 469 transitions. [2020-08-27 21:45:08,649 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 469 transitions. Word has length 107 [2020-08-27 21:45:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:08,649 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 469 transitions. [2020-08-27 21:45:08,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:45:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 469 transitions. [2020-08-27 21:45:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-27 21:45:08,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:08,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:45:08,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:45:08,652 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:08,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1148604343, now seen corresponding path program 1 times [2020-08-27 21:45:08,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:08,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403456964] [2020-08-27 21:45:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,051 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:45:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:45:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:45:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-27 21:45:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 21:45:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:09,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403456964] [2020-08-27 21:45:09,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:09,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:45:09,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90411256] [2020-08-27 21:45:09,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:45:09,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:09,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:45:09,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:45:09,257 INFO L87 Difference]: Start difference. First operand 402 states and 469 transitions. Second operand 12 states. [2020-08-27 21:45:09,723 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:10,589 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:11,697 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:12,070 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:12,388 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:12,721 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:13,053 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:45:14,494 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:14,852 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:15,700 INFO L93 Difference]: Finished difference Result 1110 states and 1376 transitions. [2020-08-27 21:45:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-27 21:45:15,705 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-27 21:45:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:15,712 INFO L225 Difference]: With dead ends: 1110 [2020-08-27 21:45:15,713 INFO L226 Difference]: Without dead ends: 806 [2020-08-27 21:45:15,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-27 21:45:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-08-27 21:45:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 696. [2020-08-27 21:45:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-27 21:45:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 804 transitions. [2020-08-27 21:45:15,865 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 804 transitions. Word has length 111 [2020-08-27 21:45:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:15,867 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 804 transitions. [2020-08-27 21:45:15,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:45:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 804 transitions. [2020-08-27 21:45:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-27 21:45:15,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:15,871 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:45:15,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:45:15,872 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:15,872 INFO L82 PathProgramCache]: Analyzing trace with hash 490171745, now seen corresponding path program 1 times [2020-08-27 21:45:15,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:15,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34711808] [2020-08-27 21:45:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,242 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:16,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:45:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:45:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:45:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:45:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-27 21:45:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-27 21:45:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:45:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:45:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-27 21:45:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-27 21:45:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-27 21:45:16,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34711808] [2020-08-27 21:45:16,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:45:16,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:45:16,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603853610] [2020-08-27 21:45:16,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:45:16,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:16,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:45:16,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:45:16,637 INFO L87 Difference]: Start difference. First operand 696 states and 804 transitions. Second operand 16 states. [2020-08-27 21:45:17,319 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:45:17,742 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:45:18,072 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:45:18,383 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:45:19,180 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-27 21:45:19,561 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:45:20,136 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-27 21:45:21,128 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 21:45:22,003 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:22,579 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-27 21:45:23,444 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-27 21:45:24,074 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-27 21:45:24,461 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:25,211 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:25,745 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-27 21:45:26,560 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-27 21:45:27,410 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:28,064 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-27 21:45:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:28,868 INFO L93 Difference]: Finished difference Result 1505 states and 1795 transitions. [2020-08-27 21:45:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-27 21:45:28,869 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 170 [2020-08-27 21:45:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:28,875 INFO L225 Difference]: With dead ends: 1505 [2020-08-27 21:45:28,875 INFO L226 Difference]: Without dead ends: 903 [2020-08-27 21:45:28,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-27 21:45:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-08-27 21:45:28,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 824. [2020-08-27 21:45:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2020-08-27 21:45:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 962 transitions. [2020-08-27 21:45:28,994 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 962 transitions. Word has length 170 [2020-08-27 21:45:28,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:28,995 INFO L479 AbstractCegarLoop]: Abstraction has 824 states and 962 transitions. [2020-08-27 21:45:28,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 21:45:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 962 transitions. [2020-08-27 21:45:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-08-27 21:45:29,001 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:29,002 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-27 21:45:29,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:45:29,002 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1064646135, now seen corresponding path program 1 times [2020-08-27 21:45:29,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:29,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425709716] [2020-08-27 21:45:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,389 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:45:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:45:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:45:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:45:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-27 21:45:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:45:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:45:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:45:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-27 21:45:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:45:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:45:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:45:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:45:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:45:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 21:45:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-27 21:45:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-08-27 21:45:29,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425709716] [2020-08-27 21:45:29,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:45:29,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:45:29,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166996615] [2020-08-27 21:45:29,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:45:29,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:29,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:45:29,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:45:29,998 INFO L87 Difference]: Start difference. First operand 824 states and 962 transitions. Second operand 15 states. [2020-08-27 21:45:31,880 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:45:32,231 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:32,537 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:32,870 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:34,374 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:35,602 INFO L93 Difference]: Finished difference Result 2172 states and 2641 transitions. [2020-08-27 21:45:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-27 21:45:35,609 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 299 [2020-08-27 21:45:35,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:35,617 INFO L225 Difference]: With dead ends: 2172 [2020-08-27 21:45:35,617 INFO L226 Difference]: Without dead ends: 1289 [2020-08-27 21:45:35,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-27 21:45:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-08-27 21:45:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1086. [2020-08-27 21:45:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1086 states. [2020-08-27 21:45:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1299 transitions. [2020-08-27 21:45:35,863 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1299 transitions. Word has length 299 [2020-08-27 21:45:35,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:35,864 INFO L479 AbstractCegarLoop]: Abstraction has 1086 states and 1299 transitions. [2020-08-27 21:45:35,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-27 21:45:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1299 transitions. [2020-08-27 21:45:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-27 21:45:35,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:35,878 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, 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, 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] [2020-08-27 21:45:35,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:45:35,878 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:35,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:35,879 INFO L82 PathProgramCache]: Analyzing trace with hash -140233560, now seen corresponding path program 1 times [2020-08-27 21:45:35,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:35,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069509276] [2020-08-27 21:45:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,295 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:45:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:45:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:45:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:45:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-27 21:45:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:45:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:45:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:45:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:45:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-27 21:45:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:45:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:45:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:45:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-27 21:45:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:45:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-27 21:45:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:45:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:45:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:45:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-27 21:45:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-27 21:45:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 86 proven. 38 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-08-27 21:45:36,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069509276] [2020-08-27 21:45:36,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:45:36,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:45:36,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373580552] [2020-08-27 21:45:36,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:45:36,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:36,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:45:36,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:45:36,851 INFO L87 Difference]: Start difference. First operand 1086 states and 1299 transitions. Second operand 16 states. [2020-08-27 21:45:37,469 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:45:37,853 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:38,188 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 192