/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:38:12,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:38:12,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:38:12,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:38:12,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:38:12,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:38:12,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:38:12,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:38:12,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:38:12,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:38:12,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:38:12,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:38:12,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:38:12,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:38:12,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:38:12,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:38:12,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:38:12,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:38:12,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:38:12,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:38:12,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:38:12,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:38:12,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:38:12,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:38:12,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:38:12,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:38:12,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:38:12,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:38:12,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:38:12,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:38:12,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:38:12,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:38:12,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:38:12,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:38:12,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:38:12,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:38:12,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:38:12,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:38:12,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:38:12,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:38:12,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:38:12,226 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 [2020-08-21 15:38:12,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:38:12,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:38:12,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:38:12,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:38:12,250 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:38:12,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:38:12,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:38:12,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:38:12,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:38:12,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:38:12,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:38:12,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:38:12,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:38:12,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:38:12,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:38:12,252 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:38:12,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:38:12,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:38:12,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:38:12,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:38:12,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:38:12,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:38:12,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:38:12,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:38:12,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:38:12,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:38:12,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:38:12,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:38:12,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:38:12,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:38:12,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:38:12,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:38:12,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:38:12,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:38:12,613 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:38:12,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2020-08-21 15:38:12,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8aa78b595/bd98c45092ae4443a85b1dbb6ee7a646/FLAG3958b97b4 [2020-08-21 15:38:13,182 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:38:13,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2020-08-21 15:38:13,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8aa78b595/bd98c45092ae4443a85b1dbb6ee7a646/FLAG3958b97b4 [2020-08-21 15:38:13,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8aa78b595/bd98c45092ae4443a85b1dbb6ee7a646 [2020-08-21 15:38:13,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:38:13,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:38:13,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:38:13,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:38:13,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:38:13,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:38:13" (1/1) ... [2020-08-21 15:38:13,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21046f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:13, skipping insertion in model container [2020-08-21 15:38:13,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:38:13" (1/1) ... [2020-08-21 15:38:13,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:38:13,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:38:13,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:38:13,929 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:38:14,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:38:14,146 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:38:14,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14 WrapperNode [2020-08-21 15:38:14,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:38:14,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:38:14,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:38:14,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:38:14,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14" (1/1) ... [2020-08-21 15:38:14,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14" (1/1) ... [2020-08-21 15:38:14,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14" (1/1) ... [2020-08-21 15:38:14,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14" (1/1) ... [2020-08-21 15:38:14,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14" (1/1) ... [2020-08-21 15:38:14,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14" (1/1) ... [2020-08-21 15:38:14,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14" (1/1) ... [2020-08-21 15:38:14,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:38:14,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:38:14,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:38:14,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:38:14,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14" (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 [2020-08-21 15:38:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:38:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:38:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:38:14,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:38:14,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:38:14,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:38:14,357 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:38:14,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:38:14,357 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:38:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:38:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:38:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:38:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:38:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:38:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:38:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:38:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:38:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 15:38:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:38:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:38:14,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:38:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:38:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:38:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:38:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:38:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:38:14,360 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:38:14,361 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:38:14,361 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:38:14,361 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:38:14,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:38:14,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:38:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:38:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:38:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:38:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:38:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:38:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:38:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:38:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:38:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:38:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:38:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:38:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:38:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:38:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:38:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:38:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:38:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:38:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:38:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:38:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:38:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:38:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:38:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:38:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:38:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:38:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:38:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 15:38:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:38:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:38:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:38:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:38:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:38:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:38:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:38:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:38:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:38:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:38:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:38:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:38:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:38:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:38:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:38:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:38:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:38:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:38:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:38:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:38:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:38:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:38:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:38:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:38:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:38:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:38:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:38:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:38:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:38:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:38:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:38:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:38:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:38:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:38:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:38:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:38:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:38:15,578 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:38:15,579 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:38:15,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:38:15 BoogieIcfgContainer [2020-08-21 15:38:15,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:38:15,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:38:15,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:38:15,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:38:15,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:38:13" (1/3) ... [2020-08-21 15:38:15,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fb4d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:38:15, skipping insertion in model container [2020-08-21 15:38:15,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:38:14" (2/3) ... [2020-08-21 15:38:15,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fb4d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:38:15, skipping insertion in model container [2020-08-21 15:38:15,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:38:15" (3/3) ... [2020-08-21 15:38:15,598 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2020-08-21 15:38:15,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:38:15,619 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:38:15,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:38:15,664 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:38:15,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:38:15,664 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:38:15,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:38:15,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:38:15,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:38:15,665 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:38:15,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:38:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-21 15:38:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 15:38:15,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:15,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:15,703 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:15,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:15,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451371, now seen corresponding path program 1 times [2020-08-21 15:38:15,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:15,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706460662] [2020-08-21 15:38:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,429 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:38:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:38:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:16,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706460662] [2020-08-21 15:38:16,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:16,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:38:16,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475340934] [2020-08-21 15:38:16,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:38:16,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:16,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:38:16,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:38:16,664 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-08-21 15:38:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:17,739 INFO L93 Difference]: Finished difference Result 286 states and 369 transitions. [2020-08-21 15:38:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:38:17,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 15:38:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:17,758 INFO L225 Difference]: With dead ends: 286 [2020-08-21 15:38:17,758 INFO L226 Difference]: Without dead ends: 159 [2020-08-21 15:38:17,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:38:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-21 15:38:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-08-21 15:38:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 15:38:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2020-08-21 15:38:17,854 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 59 [2020-08-21 15:38:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:17,854 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2020-08-21 15:38:17,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:38:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2020-08-21 15:38:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 15:38:17,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:17,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:17,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:38:17,860 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:17,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:17,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1343962066, now seen corresponding path program 1 times [2020-08-21 15:38:17,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:17,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317643972] [2020-08-21 15:38:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,163 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:18,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:38:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:38:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:38:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:18,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317643972] [2020-08-21 15:38:18,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:18,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:38:18,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154907234] [2020-08-21 15:38:18,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:38:18,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:18,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:38:18,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:38:18,225 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 5 states. [2020-08-21 15:38:18,684 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:19,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:19,518 INFO L93 Difference]: Finished difference Result 218 states and 267 transitions. [2020-08-21 15:38:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:38:19,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 15:38:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:19,521 INFO L225 Difference]: With dead ends: 218 [2020-08-21 15:38:19,521 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 15:38:19,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:38:19,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 15:38:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-21 15:38:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 15:38:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-21 15:38:19,561 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 60 [2020-08-21 15:38:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:19,561 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-21 15:38:19,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:38:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-21 15:38:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 15:38:19,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:19,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:19,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:38:19,565 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:19,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1988567769, now seen corresponding path program 1 times [2020-08-21 15:38:19,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:19,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940278294] [2020-08-21 15:38:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,916 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:19,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:20,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:20,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:20,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:20,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:38:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:20,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:38:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:20,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940278294] [2020-08-21 15:38:20,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:20,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:20,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103724861] [2020-08-21 15:38:20,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:20,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:20,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:20,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:20,104 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 9 states. [2020-08-21 15:38:20,556 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:20,875 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:21,128 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:21,371 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:22,250 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:23,405 INFO L93 Difference]: Finished difference Result 402 states and 496 transitions. [2020-08-21 15:38:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 15:38:23,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 15:38:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:23,413 INFO L225 Difference]: With dead ends: 402 [2020-08-21 15:38:23,413 INFO L226 Difference]: Without dead ends: 311 [2020-08-21 15:38:23,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:38:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-21 15:38:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 242. [2020-08-21 15:38:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-21 15:38:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2020-08-21 15:38:23,505 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 65 [2020-08-21 15:38:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:23,506 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2020-08-21 15:38:23,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2020-08-21 15:38:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 15:38:23,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:23,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:23,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:38:23,509 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:23,509 INFO L82 PathProgramCache]: Analyzing trace with hash 827482166, now seen corresponding path program 1 times [2020-08-21 15:38:23,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:23,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495259429] [2020-08-21 15:38:23,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,800 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:38:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:38:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 15:38:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 15:38:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 15:38:23,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495259429] [2020-08-21 15:38:23,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:23,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:23,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443812492] [2020-08-21 15:38:23,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:23,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:23,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:23,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:23,944 INFO L87 Difference]: Start difference. First operand 242 states and 290 transitions. Second operand 9 states. [2020-08-21 15:38:24,315 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:25,017 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:25,799 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:26,099 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:26,357 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:26,603 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:27,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:27,208 INFO L93 Difference]: Finished difference Result 631 states and 816 transitions. [2020-08-21 15:38:27,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:38:27,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 15:38:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:27,216 INFO L225 Difference]: With dead ends: 631 [2020-08-21 15:38:27,217 INFO L226 Difference]: Without dead ends: 417 [2020-08-21 15:38:27,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:38:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-21 15:38:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 353. [2020-08-21 15:38:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-08-21 15:38:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 423 transitions. [2020-08-21 15:38:27,291 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 423 transitions. Word has length 70 [2020-08-21 15:38:27,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:27,292 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 423 transitions. [2020-08-21 15:38:27,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 423 transitions. [2020-08-21 15:38:27,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 15:38:27,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:27,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:27,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:38:27,295 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:27,296 INFO L82 PathProgramCache]: Analyzing trace with hash 361073596, now seen corresponding path program 1 times [2020-08-21 15:38:27,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:27,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566333760] [2020-08-21 15:38:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,551 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:38:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 15:38:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:38:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:27,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566333760] [2020-08-21 15:38:27,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:27,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:27,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369175252] [2020-08-21 15:38:27,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:27,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:27,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:27,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:27,713 INFO L87 Difference]: Start difference. First operand 353 states and 423 transitions. Second operand 9 states. [2020-08-21 15:38:28,090 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:29,203 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:29,457 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:29,740 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:30,051 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:31,115 INFO L93 Difference]: Finished difference Result 1112 states and 1489 transitions. [2020-08-21 15:38:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:38:31,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 15:38:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:31,122 INFO L225 Difference]: With dead ends: 1112 [2020-08-21 15:38:31,122 INFO L226 Difference]: Without dead ends: 787 [2020-08-21 15:38:31,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:38:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-21 15:38:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 665. [2020-08-21 15:38:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-08-21 15:38:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 802 transitions. [2020-08-21 15:38:31,262 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 802 transitions. Word has length 88 [2020-08-21 15:38:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:31,262 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 802 transitions. [2020-08-21 15:38:31,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 802 transitions. [2020-08-21 15:38:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 15:38:31,265 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:31,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:31,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:38:31,266 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:31,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:31,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1750216773, now seen corresponding path program 1 times [2020-08-21 15:38:31,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:31,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299918571] [2020-08-21 15:38:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,516 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:31,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:38:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 15:38:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:38:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:31,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299918571] [2020-08-21 15:38:31,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:31,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:38:31,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230030295] [2020-08-21 15:38:31,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:38:31,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:31,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:38:31,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:38:31,666 INFO L87 Difference]: Start difference. First operand 665 states and 802 transitions. Second operand 9 states. [2020-08-21 15:38:32,744 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:33,023 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:38:33,314 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:33,571 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:34,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:34,193 INFO L93 Difference]: Finished difference Result 1429 states and 1823 transitions. [2020-08-21 15:38:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:38:34,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 15:38:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:34,200 INFO L225 Difference]: With dead ends: 1429 [2020-08-21 15:38:34,200 INFO L226 Difference]: Without dead ends: 792 [2020-08-21 15:38:34,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:38:34,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-08-21 15:38:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 685. [2020-08-21 15:38:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-21 15:38:34,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 822 transitions. [2020-08-21 15:38:34,335 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 822 transitions. Word has length 88 [2020-08-21 15:38:34,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:34,336 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 822 transitions. [2020-08-21 15:38:34,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:38:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 822 transitions. [2020-08-21 15:38:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 15:38:34,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:34,342 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:34,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:38:34,342 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:34,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:34,343 INFO L82 PathProgramCache]: Analyzing trace with hash -364013379, now seen corresponding path program 1 times [2020-08-21 15:38:34,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:34,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411418626] [2020-08-21 15:38:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,637 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:34,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:38:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:38:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 15:38:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 15:38:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:34,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411418626] [2020-08-21 15:38:34,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:34,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:38:34,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842362043] [2020-08-21 15:38:34,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:38:34,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:34,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:38:34,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:38:34,793 INFO L87 Difference]: Start difference. First operand 685 states and 822 transitions. Second operand 11 states. [2020-08-21 15:38:35,332 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:35,583 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:35,847 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:36,644 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:36,909 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:37,169 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:37,803 INFO L93 Difference]: Finished difference Result 1290 states and 1630 transitions. [2020-08-21 15:38:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:38:37,804 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-21 15:38:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:37,813 INFO L225 Difference]: With dead ends: 1290 [2020-08-21 15:38:37,814 INFO L226 Difference]: Without dead ends: 633 [2020-08-21 15:38:37,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:38:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-08-21 15:38:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 556. [2020-08-21 15:38:37,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 15:38:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 650 transitions. [2020-08-21 15:38:37,944 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 650 transitions. Word has length 88 [2020-08-21 15:38:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:37,945 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 650 transitions. [2020-08-21 15:38:37,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:38:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 650 transitions. [2020-08-21 15:38:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 15:38:37,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:37,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:37,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:38:37,952 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:37,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:37,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1797836392, now seen corresponding path program 1 times [2020-08-21 15:38:37,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:37,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865247408] [2020-08-21 15:38:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,298 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:38,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:38:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 15:38:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 15:38:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 15:38:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:38:38,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865247408] [2020-08-21 15:38:38,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:38:38,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:38:38,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445817064] [2020-08-21 15:38:38,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:38:38,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:38,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:38:38,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:38:38,483 INFO L87 Difference]: Start difference. First operand 556 states and 650 transitions. Second operand 12 states. [2020-08-21 15:38:38,861 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:39,506 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:40,295 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:40,654 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:40,900 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:41,186 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:41,466 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:38:42,850 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:43,134 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:43,654 INFO L93 Difference]: Finished difference Result 1629 states and 2065 transitions. [2020-08-21 15:38:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 15:38:43,655 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-08-21 15:38:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:43,663 INFO L225 Difference]: With dead ends: 1629 [2020-08-21 15:38:43,663 INFO L226 Difference]: Without dead ends: 1277 [2020-08-21 15:38:43,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 15:38:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-08-21 15:38:43,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1157. [2020-08-21 15:38:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-08-21 15:38:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1355 transitions. [2020-08-21 15:38:43,825 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1355 transitions. Word has length 92 [2020-08-21 15:38:43,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:43,825 INFO L479 AbstractCegarLoop]: Abstraction has 1157 states and 1355 transitions. [2020-08-21 15:38:43,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:38:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1355 transitions. [2020-08-21 15:38:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 15:38:43,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:43,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:38:43,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:38:43,829 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:43,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:43,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1966372220, now seen corresponding path program 1 times [2020-08-21 15:38:43,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:43,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270038550] [2020-08-21 15:38:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,141 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:44,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:38:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:38:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:38:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 15:38:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 15:38:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 15:38:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 15:38:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 15:38:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 15:38:44,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270038550] [2020-08-21 15:38:44,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:38:44,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:38:44,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423031036] [2020-08-21 15:38:44,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:38:44,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:44,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:38:44,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:38:44,529 INFO L87 Difference]: Start difference. First operand 1157 states and 1355 transitions. Second operand 16 states. [2020-08-21 15:38:45,146 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:38:45,486 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 15:38:45,748 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:38:46,000 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 15:38:46,672 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 15:38:47,093 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 15:38:47,420 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:38:47,802 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 15:38:48,142 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 15:38:49,122 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:50,212 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 15:38:50,757 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 15:38:51,068 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:51,778 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 15:38:52,715 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 15:38:52,945 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:53,222 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 15:38:53,507 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:38:54,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:38:54,257 INFO L93 Difference]: Finished difference Result 2376 states and 2878 transitions. [2020-08-21 15:38:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-21 15:38:54,258 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 136 [2020-08-21 15:38:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:38:54,265 INFO L225 Difference]: With dead ends: 2376 [2020-08-21 15:38:54,266 INFO L226 Difference]: Without dead ends: 1417 [2020-08-21 15:38:54,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=630, Invalid=2562, Unknown=0, NotChecked=0, Total=3192 [2020-08-21 15:38:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-08-21 15:38:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1269. [2020-08-21 15:38:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-21 15:38:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1463 transitions. [2020-08-21 15:38:54,603 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1463 transitions. Word has length 136 [2020-08-21 15:38:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:38:54,603 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1463 transitions. [2020-08-21 15:38:54,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:38:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1463 transitions. [2020-08-21 15:38:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-21 15:38:54,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:38:54,613 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-08-21 15:38:54,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:38:54,613 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:38:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:38:54,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1880321482, now seen corresponding path program 1 times [2020-08-21 15:38:54,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:38:54,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183330535] [2020-08-21 15:38:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:38:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:54,955 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:38:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:54,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:38:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:54,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:38:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:54,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:38:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:54,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:38:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:38:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:38:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:38:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:38:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:38:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 15:38:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:38:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:38:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:38:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 15:38:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-21 15:38:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:38:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-21 15:38:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:38:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:38:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:38:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 15:38:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 15:38:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:38:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-08-21 15:38:55,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183330535] [2020-08-21 15:38:55,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:38:55,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:38:55,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488645946] [2020-08-21 15:38:55,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:38:55,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:38:55,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:38:55,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:38:55,497 INFO L87 Difference]: Start difference. First operand 1269 states and 1463 transitions. Second operand 16 states. [2020-08-21 15:38:57,252 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:38:57,494 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:57,794 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:58,093 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:58,345 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:38:59,036 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:38:59,557 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 15:39:00,026 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 15:39:00,657 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:02,685 INFO L93 Difference]: Finished difference Result 3631 states and 4392 transitions. [2020-08-21 15:39:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-21 15:39:02,690 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 244 [2020-08-21 15:39:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:02,704 INFO L225 Difference]: With dead ends: 3631 [2020-08-21 15:39:02,704 INFO L226 Difference]: Without dead ends: 2241 [2020-08-21 15:39:02,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=449, Invalid=1807, Unknown=0, NotChecked=0, Total=2256 [2020-08-21 15:39:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2020-08-21 15:39:03,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1858. [2020-08-21 15:39:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-08-21 15:39:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2154 transitions. [2020-08-21 15:39:03,100 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2154 transitions. Word has length 244 [2020-08-21 15:39:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:03,101 INFO L479 AbstractCegarLoop]: Abstraction has 1858 states and 2154 transitions. [2020-08-21 15:39:03,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:39:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2154 transitions. [2020-08-21 15:39:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-08-21 15:39:03,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:03,109 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:03,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:39:03,109 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:03,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1137238651, now seen corresponding path program 1 times [2020-08-21 15:39:03,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:03,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276360836] [2020-08-21 15:39:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,382 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:03,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:39:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:39:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:39:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:39:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 15:39:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-21 15:39:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-21 15:39:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-08-21 15:39:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 15:39:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 15:39:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 90 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-21 15:39:03,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276360836] [2020-08-21 15:39:03,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:03,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 15:39:03,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702934410] [2020-08-21 15:39:03,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 15:39:03,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:03,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 15:39:03,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-21 15:39:03,804 INFO L87 Difference]: Start difference. First operand 1858 states and 2154 transitions. Second operand 17 states. [2020-08-21 15:39:04,736 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:05,055 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:39:05,305 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:05,542 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:06,361 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:07,263 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:07,610 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:07,850 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:08,649 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:09,373 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:09,615 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:10,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:10,364 INFO L93 Difference]: Finished difference Result 3499 states and 4139 transitions. [2020-08-21 15:39:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 15:39:10,365 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 250 [2020-08-21 15:39:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:10,377 INFO L225 Difference]: With dead ends: 3499 [2020-08-21 15:39:10,377 INFO L226 Difference]: Without dead ends: 1909 [2020-08-21 15:39:10,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=385, Invalid=1507, Unknown=0, NotChecked=0, Total=1892 [2020-08-21 15:39:10,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2020-08-21 15:39:10,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1807. [2020-08-21 15:39:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-08-21 15:39:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2067 transitions. [2020-08-21 15:39:10,653 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2067 transitions. Word has length 250 [2020-08-21 15:39:10,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:10,654 INFO L479 AbstractCegarLoop]: Abstraction has 1807 states and 2067 transitions. [2020-08-21 15:39:10,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 15:39:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2067 transitions. [2020-08-21 15:39:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-08-21 15:39:10,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:10,665 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:10,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:39:10,666 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash 507686355, now seen corresponding path program 1 times [2020-08-21 15:39:10,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:10,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708674581] [2020-08-21 15:39:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,980 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:10,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:10,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:39:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:39:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:39:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:39:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 15:39:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-21 15:39:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-21 15:39:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-21 15:39:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-08-21 15:39:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-21 15:39:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 97 proven. 27 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-08-21 15:39:11,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708674581] [2020-08-21 15:39:11,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:11,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 15:39:11,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139273831] [2020-08-21 15:39:11,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 15:39:11,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:11,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 15:39:11,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-08-21 15:39:11,471 INFO L87 Difference]: Start difference. First operand 1807 states and 2067 transitions. Second operand 17 states.