/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:22:35,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:22:35,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:22:35,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:22:35,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:22:35,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:22:35,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:22:35,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:22:35,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:22:35,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:22:35,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:22:35,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:22:35,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:22:35,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:22:35,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:22:35,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:22:35,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:22:35,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:22:35,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:22:35,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:22:35,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:22:35,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:22:35,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:22:35,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:22:35,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:22:35,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:22:35,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:22:35,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:22:35,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:22:35,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:22:35,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:22:35,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:22:35,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:22:35,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:22:35,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:22:35,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:22:35,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:22:35,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:22:35,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:22:35,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:22:35,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:22:35,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:22:35,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:22:35,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:22:35,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:22:35,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:22:35,281 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:22:35,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:22:35,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:22:35,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:22:35,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:22:35,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:22:35,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:22:35,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:22:35,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:22:35,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:22:35,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:22:35,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:22:35,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:22:35,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:22:35,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:22:35,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:22:35,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:22:35,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:22:35,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:22:35,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:22:35,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:22:35,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:22:35,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:22:35,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:22:35,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:22:35,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:22:35,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:22:35,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:22:35,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:22:35,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:22:35,609 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:22:35,611 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 10:22:35,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef96f28c3/a5f1c8fee59c45d3a6cb809b3e8cbbb2/FLAGe39b5d70b [2020-08-18 10:22:36,227 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:22:36,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product53.cil.c [2020-08-18 10:22:36,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef96f28c3/a5f1c8fee59c45d3a6cb809b3e8cbbb2/FLAGe39b5d70b [2020-08-18 10:22:36,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef96f28c3/a5f1c8fee59c45d3a6cb809b3e8cbbb2 [2020-08-18 10:22:36,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:22:36,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:22:36,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:22:36,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:22:36,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:22:36,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:22:36" (1/1) ... [2020-08-18 10:22:36,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59fe9fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:36, skipping insertion in model container [2020-08-18 10:22:36,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:22:36" (1/1) ... [2020-08-18 10:22:36,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:22:36,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:22:37,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:22:37,089 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:22:37,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:22:37,207 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:22:37,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37 WrapperNode [2020-08-18 10:22:37,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:22:37,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:22:37,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:22:37,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:22:37,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... [2020-08-18 10:22:37,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:22:37,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:22:37,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:22:37,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:22:37,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:22:37,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:22:37,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:22:37,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:22:37,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:22:37,408 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:22:37,408 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:22:37,408 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:22:37,409 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:22:37,409 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:22:37,409 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:22:37,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:22:37,410 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:22:37,410 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:22:37,410 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:22:37,410 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:22:37,412 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:22:37,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:22:37,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:22:37,412 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:22:37,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:22:37,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:22:37,413 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:22:37,414 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:22:37,414 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:22:37,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:22:37,415 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:22:37,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:22:37,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:22:37,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:22:37,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:22:37,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:22:37,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:22:37,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:22:37,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:22:37,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:22:37,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:22:37,419 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:22:37,419 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:22:37,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:22:37,419 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:22:37,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:22:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:22:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:22:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:22:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:22:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:22:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:22:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:22:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:22:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:22:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:22:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:22:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:22:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:22:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:22:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:22:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:22:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:22:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:22:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:22:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:22:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:22:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:22:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:22:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:22:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:22:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:22:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:22:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:22:37,427 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:22:37,427 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:22:37,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:22:37,428 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:22:37,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:22:37,428 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:22:37,428 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:22:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:22:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:22:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:22:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:22:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:22:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:22:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:22:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:22:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:22:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:22:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:22:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:22:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:22:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:22:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:22:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:22:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:22:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:22:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:22:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:22:38,492 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:22:38,492 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:22:38,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:22:38 BoogieIcfgContainer [2020-08-18 10:22:38,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:22:38,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:22:38,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:22:38,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:22:38,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:22:36" (1/3) ... [2020-08-18 10:22:38,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2dd2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:22:38, skipping insertion in model container [2020-08-18 10:22:38,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:37" (2/3) ... [2020-08-18 10:22:38,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2dd2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:22:38, skipping insertion in model container [2020-08-18 10:22:38,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:22:38" (3/3) ... [2020-08-18 10:22:38,506 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2020-08-18 10:22:38,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:22:38,524 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:22:38,538 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:22:38,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:22:38,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:22:38,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:22:38,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:22:38,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:22:38,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:22:38,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:22:38,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:22:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-18 10:22:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:22:38,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:38,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:38,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1930033303, now seen corresponding path program 1 times [2020-08-18 10:22:38,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:38,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035979074] [2020-08-18 10:22:38,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,278 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:22:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:22:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:22:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:39,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035979074] [2020-08-18 10:22:39,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:39,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:22:39,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155786477] [2020-08-18 10:22:39,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:22:39,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:39,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:22:39,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:22:39,386 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-18 10:22:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:40,667 INFO L93 Difference]: Finished difference Result 341 states and 445 transitions. [2020-08-18 10:22:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:22:40,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 10:22:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:40,685 INFO L225 Difference]: With dead ends: 341 [2020-08-18 10:22:40,685 INFO L226 Difference]: Without dead ends: 183 [2020-08-18 10:22:40,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:22:40,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-18 10:22:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2020-08-18 10:22:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-18 10:22:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 177 transitions. [2020-08-18 10:22:40,791 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 177 transitions. Word has length 52 [2020-08-18 10:22:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:40,792 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 177 transitions. [2020-08-18 10:22:40,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:22:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 177 transitions. [2020-08-18 10:22:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 10:22:40,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:40,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:40,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:22:40,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:40,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1692135718, now seen corresponding path program 1 times [2020-08-18 10:22:40,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:40,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382717704] [2020-08-18 10:22:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,143 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:41,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:22:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:22:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:41,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382717704] [2020-08-18 10:22:41,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:41,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:22:41,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409308766] [2020-08-18 10:22:41,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:22:41,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:41,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:22:41,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:22:41,192 INFO L87 Difference]: Start difference. First operand 149 states and 177 transitions. Second operand 4 states. [2020-08-18 10:22:41,598 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:42,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:42,596 INFO L93 Difference]: Finished difference Result 274 states and 336 transitions. [2020-08-18 10:22:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:22:42,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 10:22:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:42,609 INFO L225 Difference]: With dead ends: 274 [2020-08-18 10:22:42,609 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 10:22:42,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:22:42,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 10:22:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 10:22:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 10:22:42,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-18 10:22:42,666 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 53 [2020-08-18 10:22:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:42,666 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-18 10:22:42,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:22:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-18 10:22:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:22:42,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:42,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:42,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:22:42,670 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:42,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:42,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1292389066, now seen corresponding path program 1 times [2020-08-18 10:22:42,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:42,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857993860] [2020-08-18 10:22:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,011 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:43,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:22:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:22:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:22:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:43,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857993860] [2020-08-18 10:22:43,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:43,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:43,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639732587] [2020-08-18 10:22:43,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:43,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:43,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:43,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:43,124 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 8 states. [2020-08-18 10:22:43,524 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:43,859 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:44,129 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:44,375 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:45,736 INFO L93 Difference]: Finished difference Result 283 states and 350 transitions. [2020-08-18 10:22:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:22:45,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 10:22:45,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:45,741 INFO L225 Difference]: With dead ends: 283 [2020-08-18 10:22:45,741 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 10:22:45,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:22:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 10:22:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2020-08-18 10:22:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 10:22:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2020-08-18 10:22:45,784 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 57 [2020-08-18 10:22:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:45,784 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2020-08-18 10:22:45,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:22:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2020-08-18 10:22:45,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 10:22:45,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:45,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:45,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:22:45,788 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:45,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:45,789 INFO L82 PathProgramCache]: Analyzing trace with hash 875217030, now seen corresponding path program 1 times [2020-08-18 10:22:45,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:45,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729030117] [2020-08-18 10:22:45,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,107 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:46,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:22:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 10:22:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 10:22:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 10:22:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:46,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729030117] [2020-08-18 10:22:46,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:46,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:22:46,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078827971] [2020-08-18 10:22:46,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:22:46,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:46,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:22:46,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:22:46,206 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 6 states. [2020-08-18 10:22:46,581 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:47,840 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:48,639 INFO L93 Difference]: Finished difference Result 393 states and 487 transitions. [2020-08-18 10:22:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:22:48,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-08-18 10:22:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:48,644 INFO L225 Difference]: With dead ends: 393 [2020-08-18 10:22:48,644 INFO L226 Difference]: Without dead ends: 277 [2020-08-18 10:22:48,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:22:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-08-18 10:22:48,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2020-08-18 10:22:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-18 10:22:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2020-08-18 10:22:48,698 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 75 [2020-08-18 10:22:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:48,699 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2020-08-18 10:22:48,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:22:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2020-08-18 10:22:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 10:22:48,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:48,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:48,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:22:48,703 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:48,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1332654256, now seen corresponding path program 1 times [2020-08-18 10:22:48,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:48,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573010527] [2020-08-18 10:22:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,029 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:49,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:22:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:22:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:22:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 10:22:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:49,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573010527] [2020-08-18 10:22:49,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:49,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:49,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287539559] [2020-08-18 10:22:49,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:49,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:49,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:49,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:49,176 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand 8 states. [2020-08-18 10:22:49,542 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:50,871 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:51,157 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:51,408 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:51,660 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:52,559 INFO L93 Difference]: Finished difference Result 614 states and 761 transitions. [2020-08-18 10:22:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:22:52,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-18 10:22:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:52,563 INFO L225 Difference]: With dead ends: 614 [2020-08-18 10:22:52,563 INFO L226 Difference]: Without dead ends: 402 [2020-08-18 10:22:52,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:22:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-08-18 10:22:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 362. [2020-08-18 10:22:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2020-08-18 10:22:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 420 transitions. [2020-08-18 10:22:52,637 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 420 transitions. Word has length 89 [2020-08-18 10:22:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:52,637 INFO L479 AbstractCegarLoop]: Abstraction has 362 states and 420 transitions. [2020-08-18 10:22:52,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:22:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 420 transitions. [2020-08-18 10:22:52,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 10:22:52,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:52,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:52,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:22:52,640 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:52,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:52,641 INFO L82 PathProgramCache]: Analyzing trace with hash -920967306, now seen corresponding path program 1 times [2020-08-18 10:22:52,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:52,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771877151] [2020-08-18 10:22:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,901 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:52,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:22:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 10:22:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:22:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:22:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:53,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771877151] [2020-08-18 10:22:53,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:53,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:22:53,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647650607] [2020-08-18 10:22:53,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:22:53,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:53,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:22:53,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:22:53,095 INFO L87 Difference]: Start difference. First operand 362 states and 420 transitions. Second operand 9 states. [2020-08-18 10:22:53,552 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:54,091 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:55,585 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:57,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:57,660 INFO L93 Difference]: Finished difference Result 935 states and 1195 transitions. [2020-08-18 10:22:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:22:57,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 10:22:57,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:57,667 INFO L225 Difference]: With dead ends: 935 [2020-08-18 10:22:57,667 INFO L226 Difference]: Without dead ends: 712 [2020-08-18 10:22:57,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 10:22:57,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-08-18 10:22:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 646. [2020-08-18 10:22:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 10:22:57,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 781 transitions. [2020-08-18 10:22:57,844 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 781 transitions. Word has length 93 [2020-08-18 10:22:57,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:57,844 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 781 transitions. [2020-08-18 10:22:57,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:22:57,845 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 781 transitions. [2020-08-18 10:22:57,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 10:22:57,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:57,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:22:57,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:22:57,847 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:57,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:57,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1438339703, now seen corresponding path program 1 times [2020-08-18 10:22:57,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:57,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670755316] [2020-08-18 10:22:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,104 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:58,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:22:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:22:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:22:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:22:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 10:22:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:22:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:22:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:58,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670755316] [2020-08-18 10:22:58,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:58,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:58,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407206302] [2020-08-18 10:22:58,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:58,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:58,260 INFO L87 Difference]: Start difference. First operand 646 states and 781 transitions. Second operand 8 states. [2020-08-18 10:22:59,114 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:59,342 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:59,588 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:00,978 INFO L93 Difference]: Finished difference Result 1191 states and 1490 transitions. [2020-08-18 10:23:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:23:00,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 10:23:00,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:01,001 INFO L225 Difference]: With dead ends: 1191 [2020-08-18 10:23:01,001 INFO L226 Difference]: Without dead ends: 688 [2020-08-18 10:23:01,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:23:01,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-08-18 10:23:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 646. [2020-08-18 10:23:01,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-08-18 10:23:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 780 transitions. [2020-08-18 10:23:01,184 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 780 transitions. Word has length 93 [2020-08-18 10:23:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:01,184 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 780 transitions. [2020-08-18 10:23:01,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:23:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 780 transitions. [2020-08-18 10:23:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 10:23:01,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:01,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:23:01,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:23:01,187 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:01,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2097871225, now seen corresponding path program 1 times [2020-08-18 10:23:01,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:01,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113380944] [2020-08-18 10:23:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,532 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:23:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 10:23:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:23:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:23:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:23:01,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113380944] [2020-08-18 10:23:01,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:23:01,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:23:01,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629467241] [2020-08-18 10:23:01,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:23:01,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:01,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:23:01,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:23:01,763 INFO L87 Difference]: Start difference. First operand 646 states and 780 transitions. Second operand 12 states. [2020-08-18 10:23:02,465 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:02,710 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:02,943 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:03,603 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:03,865 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:04,141 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:04,389 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:05,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:05,814 INFO L93 Difference]: Finished difference Result 1270 states and 1579 transitions. [2020-08-18 10:23:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 10:23:05,814 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-18 10:23:05,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:05,821 INFO L225 Difference]: With dead ends: 1270 [2020-08-18 10:23:05,823 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 10:23:05,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 10:23:05,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 10:23:05,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 10:23:05,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 10:23:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 740 transitions. [2020-08-18 10:23:05,968 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 740 transitions. Word has length 93 [2020-08-18 10:23:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:05,969 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 740 transitions. [2020-08-18 10:23:05,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:23:05,969 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 740 transitions. [2020-08-18 10:23:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 10:23:05,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:05,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:23:05,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:23:05,974 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:05,974 INFO L82 PathProgramCache]: Analyzing trace with hash 791892564, now seen corresponding path program 1 times [2020-08-18 10:23:05,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:05,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678426860] [2020-08-18 10:23:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,264 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:06,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:23:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:23:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:23:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 10:23:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:23:06,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678426860] [2020-08-18 10:23:06,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:23:06,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 10:23:06,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904922319] [2020-08-18 10:23:06,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:23:06,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:06,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:23:06,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:23:06,444 INFO L87 Difference]: Start difference. First operand 617 states and 740 transitions. Second operand 13 states. [2020-08-18 10:23:07,201 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:07,456 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:07,698 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:08,679 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:09,312 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:09,680 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:09,963 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:10,661 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:10,986 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:11,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:11,444 INFO L93 Difference]: Finished difference Result 1241 states and 1503 transitions. [2020-08-18 10:23:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 10:23:11,445 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-08-18 10:23:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:11,450 INFO L225 Difference]: With dead ends: 1241 [2020-08-18 10:23:11,450 INFO L226 Difference]: Without dead ends: 648 [2020-08-18 10:23:11,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 10:23:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-08-18 10:23:11,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2020-08-18 10:23:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 10:23:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 724 transitions. [2020-08-18 10:23:11,577 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 724 transitions. Word has length 94 [2020-08-18 10:23:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:11,579 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 724 transitions. [2020-08-18 10:23:11,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:23:11,579 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 724 transitions. [2020-08-18 10:23:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 10:23:11,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:11,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:23:11,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:23:11,586 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:11,586 INFO L82 PathProgramCache]: Analyzing trace with hash -361137762, now seen corresponding path program 1 times [2020-08-18 10:23:11,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:11,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369297185] [2020-08-18 10:23:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,847 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:23:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:11,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:12,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 10:23:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 10:23:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:12,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:12,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 10:23:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 10:23:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 10:23:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 10:23:12,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369297185] [2020-08-18 10:23:12,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:12,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:23:12,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541177172] [2020-08-18 10:23:12,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:23:12,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:12,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:23:12,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:23:12,059 INFO L87 Difference]: Start difference. First operand 617 states and 724 transitions. Second operand 10 states. [2020-08-18 10:23:13,005 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:13,253 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:13,505 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:13,750 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:14,752 INFO L93 Difference]: Finished difference Result 1154 states and 1382 transitions. [2020-08-18 10:23:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:23:14,753 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-08-18 10:23:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:14,757 INFO L225 Difference]: With dead ends: 1154 [2020-08-18 10:23:14,757 INFO L226 Difference]: Without dead ends: 636 [2020-08-18 10:23:14,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:23:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-08-18 10:23:14,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 617. [2020-08-18 10:23:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-18 10:23:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 722 transitions. [2020-08-18 10:23:14,869 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 722 transitions. Word has length 137 [2020-08-18 10:23:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:14,869 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 722 transitions. [2020-08-18 10:23:14,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:23:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 722 transitions. [2020-08-18 10:23:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-18 10:23:14,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:14,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:23:14,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:23:14,874 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:14,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:14,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1515345056, now seen corresponding path program 1 times [2020-08-18 10:23:14,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:14,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317638314] [2020-08-18 10:23:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,206 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:23:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 10:23:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 10:23:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 10:23:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 10:23:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 10:23:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 10:23:15,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317638314] [2020-08-18 10:23:15,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:15,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:23:15,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218729777] [2020-08-18 10:23:15,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:23:15,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:15,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:23:15,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:23:15,395 INFO L87 Difference]: Start difference. First operand 617 states and 722 transitions. Second operand 12 states. [2020-08-18 10:23:15,921 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:16,173 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:16,411 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:17,015 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:17,262 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:17,484 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:18,592 INFO L93 Difference]: Finished difference Result 1066 states and 1276 transitions. [2020-08-18 10:23:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:23:18,593 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2020-08-18 10:23:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:18,599 INFO L225 Difference]: With dead ends: 1066 [2020-08-18 10:23:18,599 INFO L226 Difference]: Without dead ends: 543 [2020-08-18 10:23:18,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:23:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-08-18 10:23:18,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 524. [2020-08-18 10:23:18,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 10:23:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 611 transitions. [2020-08-18 10:23:18,694 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 611 transitions. Word has length 137 [2020-08-18 10:23:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:18,694 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 611 transitions. [2020-08-18 10:23:18,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:23:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 611 transitions. [2020-08-18 10:23:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-18 10:23:18,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:18,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:23:18,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:23:18,697 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:18,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:18,697 INFO L82 PathProgramCache]: Analyzing trace with hash -834613817, now seen corresponding path program 1 times [2020-08-18 10:23:18,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:18,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255700201] [2020-08-18 10:23:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,963 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:23:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:23:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 10:23:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-18 10:23:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 10:23:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 10:23:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 10:23:19,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255700201] [2020-08-18 10:23:19,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:19,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 10:23:19,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573333790] [2020-08-18 10:23:19,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:23:19,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:19,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:23:19,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:23:19,203 INFO L87 Difference]: Start difference. First operand 524 states and 611 transitions. Second operand 11 states. [2020-08-18 10:23:19,557 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:20,116 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:20,958 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:21,450 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 10:23:21,934 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 10:23:22,165 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:23,772 INFO L93 Difference]: Finished difference Result 1550 states and 1871 transitions. [2020-08-18 10:23:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:23:23,773 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 141 [2020-08-18 10:23:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:23,779 INFO L225 Difference]: With dead ends: 1550 [2020-08-18 10:23:23,779 INFO L226 Difference]: Without dead ends: 1050 [2020-08-18 10:23:23,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 10:23:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-08-18 10:23:23,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1021. [2020-08-18 10:23:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-08-18 10:23:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1176 transitions. [2020-08-18 10:23:23,996 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1176 transitions. Word has length 141 [2020-08-18 10:23:23,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:23,996 INFO L479 AbstractCegarLoop]: Abstraction has 1021 states and 1176 transitions. [2020-08-18 10:23:23,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:23:23,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1176 transitions. [2020-08-18 10:23:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-18 10:23:24,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:24,000 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:23:24,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 10:23:24,001 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:24,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1626419797, now seen corresponding path program 1 times [2020-08-18 10:23:24,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:24,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132860414] [2020-08-18 10:23:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,320 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:24,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:23:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:23:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 10:23:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 10:23:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 10:23:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 10:23:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 10:23:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 10:23:24,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132860414] [2020-08-18 10:23:24,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:24,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 10:23:24,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598546348] [2020-08-18 10:23:24,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 10:23:24,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:24,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 10:23:24,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:23:24,566 INFO L87 Difference]: Start difference. First operand 1021 states and 1176 transitions. Second operand 15 states. [2020-08-18 10:23:25,607 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:25,852 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:26,077 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:26,641 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:27,752 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:28,101 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:28,389 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:28,645 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:23:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:30,581 INFO L93 Difference]: Finished difference Result 2052 states and 2452 transitions. [2020-08-18 10:23:30,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 10:23:30,581 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-18 10:23:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:30,588 INFO L225 Difference]: With dead ends: 2052 [2020-08-18 10:23:30,588 INFO L226 Difference]: Without dead ends: 1055 [2020-08-18 10:23:30,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-08-18 10:23:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-18 10:23:30,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 955. [2020-08-18 10:23:30,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-08-18 10:23:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1097 transitions. [2020-08-18 10:23:30,768 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1097 transitions. Word has length 145 [2020-08-18 10:23:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:30,769 INFO L479 AbstractCegarLoop]: Abstraction has 955 states and 1097 transitions. [2020-08-18 10:23:30,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 10:23:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1097 transitions. [2020-08-18 10:23:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 10:23:30,773 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:30,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:23:30,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 10:23:30,774 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:30,775 INFO L82 PathProgramCache]: Analyzing trace with hash -248365737, now seen corresponding path program 1 times [2020-08-18 10:23:30,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:30,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023435457] [2020-08-18 10:23:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,106 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:23:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:23:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:23:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:23:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 10:23:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 10:23:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 10:23:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:23:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:23:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:23:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 10:23:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 10:23:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 10:23:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-18 10:23:31,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023435457] [2020-08-18 10:23:31,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:23:31,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 10:23:31,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528436072] [2020-08-18 10:23:31,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 10:23:31,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:31,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 10:23:31,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:23:31,356 INFO L87 Difference]: Start difference. First operand 955 states and 1097 transitions. Second operand 15 states. [2020-08-18 10:23:31,788 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:32,423 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:23:33,471 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:23:33,802 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:34,284 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 10:23:34,747 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-18 10:23:35,674 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:23:35,937 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189