/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:12:15,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:12:15,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:12:15,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:12:15,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:12:15,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:12:15,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:12:15,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:12:15,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:12:15,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:12:15,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:12:15,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:12:15,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:12:15,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:12:15,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:12:15,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:12:15,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:12:15,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:12:15,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:12:15,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:12:15,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:12:15,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:12:15,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:12:15,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:12:15,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:12:15,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:12:15,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:12:15,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:12:15,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:12:15,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:12:15,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:12:15,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:12:15,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:12:15,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:12:15,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:12:15,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:12:15,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:12:15,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:12:15,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:12:15,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:12:15,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:12:15,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:12:15,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:12:15,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:12:15,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:12:15,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:12:15,314 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:12:15,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:12:15,315 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:12:15,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:12:15,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:12:15,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:12:15,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:12:15,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:12:15,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:12:15,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:12:15,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:12:15,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:12:15,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:12:15,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:12:15,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:12:15,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:12:15,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:12:15,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:12:15,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:12:15,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:12:15,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:12:15,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:12:15,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:12:15,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:12:15,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:12:15,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:12:15,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:12:15,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:12:15,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:12:15,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:12:15,659 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:12:15,659 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2020-08-18 16:12:15,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83653e3b6/ee8443afeb3d4ad4bac2a8e988f265b5/FLAG2b8ceb71d [2020-08-18 16:12:16,244 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:12:16,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product57.cil.c [2020-08-18 16:12:16,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83653e3b6/ee8443afeb3d4ad4bac2a8e988f265b5/FLAG2b8ceb71d [2020-08-18 16:12:16,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83653e3b6/ee8443afeb3d4ad4bac2a8e988f265b5 [2020-08-18 16:12:16,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:12:16,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:12:16,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:12:16,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:12:16,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:12:16,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:12:16" (1/1) ... [2020-08-18 16:12:16,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:16, skipping insertion in model container [2020-08-18 16:12:16,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:12:16" (1/1) ... [2020-08-18 16:12:16,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:12:16,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:12:17,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:12:17,154 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:12:17,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:12:17,309 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:12:17,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17 WrapperNode [2020-08-18 16:12:17,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:12:17,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:12:17,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:12:17,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:12:17,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17" (1/1) ... [2020-08-18 16:12:17,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17" (1/1) ... [2020-08-18 16:12:17,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17" (1/1) ... [2020-08-18 16:12:17,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17" (1/1) ... [2020-08-18 16:12:17,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17" (1/1) ... [2020-08-18 16:12:17,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17" (1/1) ... [2020-08-18 16:12:17,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17" (1/1) ... [2020-08-18 16:12:17,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:12:17,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:12:17,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:12:17,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:12:17,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:12:17,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:12:17,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:12:17,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:12:17,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:12:17,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:12:17,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:12:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:12:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:12:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:12:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:12:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:12:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:12:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:12:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:12:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:12:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:12:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:12:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:12:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:12:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:12:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:12:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:12:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:12:17,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:12:17,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:12:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:12:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:12:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:12:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:12:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:12:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:12:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:12:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:12:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:12:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:12:17,531 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:12:17,532 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:12:17,532 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:12:17,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:12:17,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:12:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:12:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:12:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:12:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:12:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:12:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:12:17,536 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:12:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:12:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:12:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:12:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:12:17,537 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:12:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:12:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:12:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:12:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:12:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:12:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:12:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:12:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:12:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:12:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:12:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:12:17,540 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:12:17,540 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:12:17,540 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:12:17,540 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:12:17,540 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:12:17,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:12:17,541 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:12:17,541 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:12:17,541 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:12:17,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:12:17,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:12:17,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:12:17,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:12:17,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:12:17,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:12:17,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:12:17,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:12:17,545 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:12:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:12:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:12:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:12:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:12:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:12:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:12:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:12:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:12:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:12:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:12:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:12:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:12:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:12:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:12:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:12:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:12:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:12:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:12:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:12:18,653 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:12:18,654 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:12:18,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:12:18 BoogieIcfgContainer [2020-08-18 16:12:18,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:12:18,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:12:18,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:12:18,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:12:18,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:12:16" (1/3) ... [2020-08-18 16:12:18,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b3fa41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:12:18, skipping insertion in model container [2020-08-18 16:12:18,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:12:17" (2/3) ... [2020-08-18 16:12:18,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b3fa41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:12:18, skipping insertion in model container [2020-08-18 16:12:18,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:12:18" (3/3) ... [2020-08-18 16:12:18,675 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2020-08-18 16:12:18,687 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:12:18,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:12:18,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:12:18,748 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:12:18,748 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:12:18,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:12:18,749 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:12:18,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:12:18,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:12:18,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:12:18,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:12:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-18 16:12:18,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:12:18,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:18,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:18,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:18,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:18,804 INFO L82 PathProgramCache]: Analyzing trace with hash 479094946, now seen corresponding path program 1 times [2020-08-18 16:12:18,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:18,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378659850] [2020-08-18 16:12:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,526 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:19,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:12:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:12:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:19,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378659850] [2020-08-18 16:12:19,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:19,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:12:19,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201223808] [2020-08-18 16:12:19,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:12:19,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:19,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:12:19,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:12:19,691 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 4 states. [2020-08-18 16:12:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:20,858 INFO L93 Difference]: Finished difference Result 335 states and 423 transitions. [2020-08-18 16:12:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:12:20,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 16:12:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:20,875 INFO L225 Difference]: With dead ends: 335 [2020-08-18 16:12:20,876 INFO L226 Difference]: Without dead ends: 183 [2020-08-18 16:12:20,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:12:20,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-18 16:12:20,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2020-08-18 16:12:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 16:12:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2020-08-18 16:12:20,982 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 59 [2020-08-18 16:12:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:20,983 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2020-08-18 16:12:20,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:12:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2020-08-18 16:12:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:12:20,988 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:20,988 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] [2020-08-18 16:12:20,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:12:20,988 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:20,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1126861649, now seen corresponding path program 1 times [2020-08-18 16:12:20,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:20,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901925618] [2020-08-18 16:12:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,418 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:21,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:12:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:12:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:21,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901925618] [2020-08-18 16:12:21,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:21,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:12:21,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032601622] [2020-08-18 16:12:21,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:12:21,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:21,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:12:21,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:12:21,536 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand 9 states. [2020-08-18 16:12:21,957 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:22,293 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:22,555 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:22,787 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:24,203 INFO L93 Difference]: Finished difference Result 308 states and 378 transitions. [2020-08-18 16:12:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:12:24,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 16:12:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:24,214 INFO L225 Difference]: With dead ends: 308 [2020-08-18 16:12:24,214 INFO L226 Difference]: Without dead ends: 183 [2020-08-18 16:12:24,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:12:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-18 16:12:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2020-08-18 16:12:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 16:12:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2020-08-18 16:12:24,263 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 64 [2020-08-18 16:12:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:24,264 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2020-08-18 16:12:24,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:12:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2020-08-18 16:12:24,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 16:12:24,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:24,267 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] [2020-08-18 16:12:24,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:12:24,268 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:24,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:24,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1745445590, now seen corresponding path program 1 times [2020-08-18 16:12:24,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:24,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337691611] [2020-08-18 16:12:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,548 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:24,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 16:12:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:12:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:24,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:24,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337691611] [2020-08-18 16:12:24,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:24,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:12:24,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233405659] [2020-08-18 16:12:24,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:12:24,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:24,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:12:24,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:12:24,688 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand 7 states. [2020-08-18 16:12:25,092 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:26,659 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:27,438 INFO L93 Difference]: Finished difference Result 445 states and 574 transitions. [2020-08-18 16:12:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:12:27,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-18 16:12:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:27,444 INFO L225 Difference]: With dead ends: 445 [2020-08-18 16:12:27,445 INFO L226 Difference]: Without dead ends: 320 [2020-08-18 16:12:27,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:12:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-18 16:12:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 259. [2020-08-18 16:12:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-18 16:12:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 309 transitions. [2020-08-18 16:12:27,523 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 309 transitions. Word has length 77 [2020-08-18 16:12:27,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:27,524 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 309 transitions. [2020-08-18 16:12:27,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:12:27,524 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 309 transitions. [2020-08-18 16:12:27,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 16:12:27,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:27,527 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] [2020-08-18 16:12:27,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:12:27,527 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:27,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:27,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1775922839, now seen corresponding path program 1 times [2020-08-18 16:12:27,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:27,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882825897] [2020-08-18 16:12:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,813 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 16:12:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 16:12:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:12:27,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882825897] [2020-08-18 16:12:27,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:27,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:12:27,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912088940] [2020-08-18 16:12:27,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:12:27,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:27,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:12:27,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:12:27,986 INFO L87 Difference]: Start difference. First operand 259 states and 309 transitions. Second operand 9 states. [2020-08-18 16:12:28,379 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:29,042 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:30,003 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:30,275 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:30,697 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:30,917 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:31,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:31,588 INFO L93 Difference]: Finished difference Result 540 states and 684 transitions. [2020-08-18 16:12:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:12:31,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-18 16:12:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:31,593 INFO L225 Difference]: With dead ends: 540 [2020-08-18 16:12:31,593 INFO L226 Difference]: Without dead ends: 309 [2020-08-18 16:12:31,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:12:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-18 16:12:31,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 258. [2020-08-18 16:12:31,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-18 16:12:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 306 transitions. [2020-08-18 16:12:31,649 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 306 transitions. Word has length 91 [2020-08-18 16:12:31,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:31,650 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 306 transitions. [2020-08-18 16:12:31,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:12:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 306 transitions. [2020-08-18 16:12:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:12:31,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:31,653 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] [2020-08-18 16:12:31,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:12:31,653 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:31,654 INFO L82 PathProgramCache]: Analyzing trace with hash 534241489, now seen corresponding path program 1 times [2020-08-18 16:12:31,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:31,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081766689] [2020-08-18 16:12:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,963 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:12:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:12:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:12:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:12:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:32,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081766689] [2020-08-18 16:12:32,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:32,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:12:32,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838632539] [2020-08-18 16:12:32,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:12:32,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:32,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:12:32,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:12:32,173 INFO L87 Difference]: Start difference. First operand 258 states and 306 transitions. Second operand 10 states. [2020-08-18 16:12:32,841 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:33,446 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:33,686 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:33,938 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:34,165 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:35,073 INFO L93 Difference]: Finished difference Result 502 states and 624 transitions. [2020-08-18 16:12:35,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 16:12:35,076 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-18 16:12:35,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:35,082 INFO L225 Difference]: With dead ends: 502 [2020-08-18 16:12:35,082 INFO L226 Difference]: Without dead ends: 272 [2020-08-18 16:12:35,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:12:35,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-08-18 16:12:35,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 233. [2020-08-18 16:12:35,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-18 16:12:35,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 264 transitions. [2020-08-18 16:12:35,150 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 264 transitions. Word has length 103 [2020-08-18 16:12:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:35,151 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 264 transitions. [2020-08-18 16:12:35,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:12:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 264 transitions. [2020-08-18 16:12:35,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 16:12:35,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:35,158 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] [2020-08-18 16:12:35,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:12:35,158 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:35,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:35,159 INFO L82 PathProgramCache]: Analyzing trace with hash 697480839, now seen corresponding path program 1 times [2020-08-18 16:12:35,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:35,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442088134] [2020-08-18 16:12:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,566 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:12:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:12:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:35,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442088134] [2020-08-18 16:12:35,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:35,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:12:35,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348490375] [2020-08-18 16:12:35,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:12:35,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:35,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:12:35,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:12:35,816 INFO L87 Difference]: Start difference. First operand 233 states and 264 transitions. Second operand 11 states. [2020-08-18 16:12:36,271 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:36,506 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:36,738 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:37,390 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:37,645 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:37,873 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:38,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:38,797 INFO L93 Difference]: Finished difference Result 482 states and 584 transitions. [2020-08-18 16:12:38,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:12:38,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-18 16:12:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:38,801 INFO L225 Difference]: With dead ends: 482 [2020-08-18 16:12:38,801 INFO L226 Difference]: Without dead ends: 277 [2020-08-18 16:12:38,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:12:38,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-18 16:12:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 237. [2020-08-18 16:12:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 16:12:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 268 transitions. [2020-08-18 16:12:38,842 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 268 transitions. Word has length 107 [2020-08-18 16:12:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:38,842 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 268 transitions. [2020-08-18 16:12:38,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:12:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 268 transitions. [2020-08-18 16:12:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 16:12:38,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:38,844 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] [2020-08-18 16:12:38,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:12:38,845 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash 456940710, now seen corresponding path program 1 times [2020-08-18 16:12:38,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:38,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520826633] [2020-08-18 16:12:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,105 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:12:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:12:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:12:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:12:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:39,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520826633] [2020-08-18 16:12:39,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:39,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:12:39,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164042179] [2020-08-18 16:12:39,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:12:39,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:39,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:12:39,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:12:39,290 INFO L87 Difference]: Start difference. First operand 237 states and 268 transitions. Second operand 7 states. [2020-08-18 16:12:39,663 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:40,183 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:41,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:41,835 INFO L93 Difference]: Finished difference Result 651 states and 808 transitions. [2020-08-18 16:12:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:12:41,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-08-18 16:12:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:41,840 INFO L225 Difference]: With dead ends: 651 [2020-08-18 16:12:41,840 INFO L226 Difference]: Without dead ends: 442 [2020-08-18 16:12:41,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:12:41,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-18 16:12:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 404. [2020-08-18 16:12:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-08-18 16:12:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 472 transitions. [2020-08-18 16:12:41,909 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 472 transitions. Word has length 107 [2020-08-18 16:12:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:41,909 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 472 transitions. [2020-08-18 16:12:41,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:12:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 472 transitions. [2020-08-18 16:12:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-18 16:12:41,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:41,911 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] [2020-08-18 16:12:41,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:12:41,912 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:41,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1562894580, now seen corresponding path program 1 times [2020-08-18 16:12:41,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:41,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787105500] [2020-08-18 16:12:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,227 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:42,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:12:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:12:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:12:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 16:12:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:12:42,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787105500] [2020-08-18 16:12:42,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:12:42,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:12:42,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542481064] [2020-08-18 16:12:42,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:12:42,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:42,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:12:42,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:12:42,398 INFO L87 Difference]: Start difference. First operand 404 states and 472 transitions. Second operand 12 states. [2020-08-18 16:12:42,827 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:43,456 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:44,416 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:44,709 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:44,956 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:45,220 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:45,473 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:46,758 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:47,013 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:47,676 INFO L93 Difference]: Finished difference Result 1116 states and 1385 transitions. [2020-08-18 16:12:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:12:47,677 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-18 16:12:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:47,682 INFO L225 Difference]: With dead ends: 1116 [2020-08-18 16:12:47,682 INFO L226 Difference]: Without dead ends: 810 [2020-08-18 16:12:47,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 16:12:47,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-08-18 16:12:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 700. [2020-08-18 16:12:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-18 16:12:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 810 transitions. [2020-08-18 16:12:47,804 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 810 transitions. Word has length 111 [2020-08-18 16:12:47,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:47,804 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 810 transitions. [2020-08-18 16:12:47,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:12:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 810 transitions. [2020-08-18 16:12:47,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-18 16:12:47,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:47,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:47,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:12:47,808 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:47,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:47,808 INFO L82 PathProgramCache]: Analyzing trace with hash 903450751, now seen corresponding path program 1 times [2020-08-18 16:12:47,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:47,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453432439] [2020-08-18 16:12:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,126 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:12:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:12:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:12:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 16:12:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 16:12:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 16:12:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:12:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 16:12:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 16:12:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 16:12:48,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453432439] [2020-08-18 16:12:48,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:12:48,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:12:48,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499823992] [2020-08-18 16:12:48,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:12:48,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:48,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:12:48,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:12:48,443 INFO L87 Difference]: Start difference. First operand 700 states and 810 transitions. Second operand 16 states. [2020-08-18 16:12:48,932 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:49,276 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:12:49,545 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 16:12:49,801 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 16:12:50,400 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:50,694 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:51,571 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:52,213 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:52,624 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:53,053 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:53,327 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:53,607 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:54,135 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:54,518 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:54,924 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:55,548 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:55,826 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:12:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:56,451 INFO L93 Difference]: Finished difference Result 1513 states and 1807 transitions. [2020-08-18 16:12:56,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 16:12:56,452 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-08-18 16:12:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:56,459 INFO L225 Difference]: With dead ends: 1513 [2020-08-18 16:12:56,460 INFO L226 Difference]: Without dead ends: 907 [2020-08-18 16:12:56,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 16:12:56,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-08-18 16:12:56,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 828. [2020-08-18 16:12:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2020-08-18 16:12:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 968 transitions. [2020-08-18 16:12:56,626 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 968 transitions. Word has length 172 [2020-08-18 16:12:56,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:56,630 INFO L479 AbstractCegarLoop]: Abstraction has 828 states and 968 transitions. [2020-08-18 16:12:56,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:12:56,631 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 968 transitions. [2020-08-18 16:12:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-18 16:12:56,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:56,638 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, 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, 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] [2020-08-18 16:12:56,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:12:56,638 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:56,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1791991912, now seen corresponding path program 1 times [2020-08-18 16:12:56,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:56,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326262458] [2020-08-18 16:12:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:56,962 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:56,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:56,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:56,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:56,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:12:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:12:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:12:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:12:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:12:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:12:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:12:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-18 16:12:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:12:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:12:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:12:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-18 16:12:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 16:12:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-18 16:12:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 16:12:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-08-18 16:12:57,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326262458] [2020-08-18 16:12:57,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:12:57,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:12:57,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963497906] [2020-08-18 16:12:57,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:12:57,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:57,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:12:57,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:12:57,682 INFO L87 Difference]: Start difference. First operand 828 states and 968 transitions. Second operand 15 states. [2020-08-18 16:12:59,524 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:59,810 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:00,067 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:00,331 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:01,694 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:02,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:02,787 INFO L93 Difference]: Finished difference Result 2180 states and 2653 transitions. [2020-08-18 16:13:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 16:13:02,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 303 [2020-08-18 16:13:02,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:02,799 INFO L225 Difference]: With dead ends: 2180 [2020-08-18 16:13:02,799 INFO L226 Difference]: Without dead ends: 1293 [2020-08-18 16:13:02,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 16:13:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2020-08-18 16:13:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1090. [2020-08-18 16:13:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2020-08-18 16:13:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1305 transitions. [2020-08-18 16:13:02,954 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1305 transitions. Word has length 303 [2020-08-18 16:13:02,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:13:02,955 INFO L479 AbstractCegarLoop]: Abstraction has 1090 states and 1305 transitions. [2020-08-18 16:13:02,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:13:02,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1305 transitions. [2020-08-18 16:13:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-18 16:13:02,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:02,962 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:13:02,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:13:02,962 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:02,963 INFO L82 PathProgramCache]: Analyzing trace with hash -943069261, now seen corresponding path program 1 times [2020-08-18 16:13:02,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:02,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578137816] [2020-08-18 16:13:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,363 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:13:03,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:13:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:13:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:13:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:13:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:13:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:13:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:13:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:13:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 16:13:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:13:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 16:13:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-18 16:13:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 16:13:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-18 16:13:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 85 proven. 38 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-08-18 16:13:03,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578137816] [2020-08-18 16:13:03,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:13:03,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:13:03,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095099150] [2020-08-18 16:13:03,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:13:03,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:03,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:13:03,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:13:03,899 INFO L87 Difference]: Start difference. First operand 1090 states and 1305 transitions. Second operand 16 states. [2020-08-18 16:13:04,583 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:04,895 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:13:05,150 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:05,387 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:06,030 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:06,968 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:07,219 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:07,690 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:13:08,244 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:09,027 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:09,282 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:13:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:09,822 INFO L93 Difference]: Finished difference Result 2070 states and 2513 transitions. [2020-08-18 16:13:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 16:13:09,823 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 309 [2020-08-18 16:13:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:09,831 INFO L225 Difference]: With dead ends: 2070 [2020-08-18 16:13:09,831 INFO L226 Difference]: Without dead ends: 1093 [2020-08-18 16:13:09,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 16:13:09,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-08-18 16:13:10,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1050. [2020-08-18 16:13:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-08-18 16:13:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1239 transitions. [2020-08-18 16:13:10,035 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1239 transitions. Word has length 309 [2020-08-18 16:13:10,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:13:10,036 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1239 transitions. [2020-08-18 16:13:10,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:13:10,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1239 transitions. [2020-08-18 16:13:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-08-18 16:13:10,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:10,046 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, 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, 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] [2020-08-18 16:13:10,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:13:10,046 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:10,046 INFO L82 PathProgramCache]: Analyzing trace with hash -828307193, now seen corresponding path program 1 times [2020-08-18 16:13:10,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:10,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652765841] [2020-08-18 16:13:10,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,354 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:13:10,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:13:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:13:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:13:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:13:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:13:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:13:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:13:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:13:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-18 16:13:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:13:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-18 16:13:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-18 16:13:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 16:13:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-18 16:13:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 16:13:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-18 16:13:10,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652765841] [2020-08-18 16:13:10,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:13:10,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 16:13:10,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169095569] [2020-08-18 16:13:10,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:13:10,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:10,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:13:10,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:13:10,631 INFO L87 Difference]: Start difference. First operand 1050 states and 1239 transitions. Second operand 11 states. [2020-08-18 16:13:12,245 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:13:12,487 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:13:12,746 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:13:12,993 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:13:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:13,440 INFO L93 Difference]: Finished difference Result 2022 states and 2422 transitions. [2020-08-18 16:13:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:13:13,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 314 [2020-08-18 16:13:13,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:13,445 INFO L225 Difference]: With dead ends: 2022 [2020-08-18 16:13:13,445 INFO L226 Difference]: Without dead ends: 1085 [2020-08-18 16:13:13,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:13:13,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-08-18 16:13:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 1060. [2020-08-18 16:13:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2020-08-18 16:13:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1249 transitions. [2020-08-18 16:13:13,721 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1249 transitions. Word has length 314 [2020-08-18 16:13:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:13:13,722 INFO L479 AbstractCegarLoop]: Abstraction has 1060 states and 1249 transitions. [2020-08-18 16:13:13,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:13:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1249 transitions. [2020-08-18 16:13:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-08-18 16:13:13,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:13,730 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:13:13,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:13:13,731 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:13,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1324799625, now seen corresponding path program 1 times [2020-08-18 16:13:13,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:13,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318934072] [2020-08-18 16:13:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,038 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:13:14,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:13:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:13:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:13:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:13:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:13:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:13:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:13:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:13:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:13:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-18 16:13:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:13:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:13:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:13:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-18 16:13:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-18 16:13:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 16:13:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:13:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:13:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:13:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:13:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-18 16:13:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-18 16:13:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 93 proven. 25 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-08-18 16:13:14,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318934072] [2020-08-18 16:13:14,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:13:14,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:13:14,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562819538] [2020-08-18 16:13:14,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:13:14,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:14,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:13:14,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:13:14,542 INFO L87 Difference]: Start difference. First operand 1060 states and 1249 transitions. Second operand 16 states.