/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:06:45,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:06:45,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:06:45,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:06:45,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:06:45,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:06:45,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:06:45,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:06:45,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:06:45,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:06:45,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:06:45,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:06:45,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:06:45,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:06:45,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:06:45,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:06:45,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:06:45,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:06:45,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:06:45,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:06:45,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:06:45,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:06:45,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:06:45,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:06:45,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:06:45,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:06:45,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:06:45,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:06:45,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:06:45,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:06:45,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:06:45,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:06:45,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:06:45,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:06:45,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:06:45,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:06:45,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:06:45,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:06:45,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:06:45,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:06:45,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:06:45,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:06:45,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:06:45,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:06:45,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:06:45,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:06:45,240 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:06:45,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:06:45,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:06:45,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:06:45,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:06:45,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:06:45,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:06:45,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:06:45,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:06:45,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:06:45,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:06:45,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:06:45,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:06:45,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:06:45,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:06:45,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:06:45,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:06:45,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:06:45,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:06:45,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:06:45,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:06:45,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:06:45,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:06:45,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:06:45,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:06:45,247 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=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:06:45,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:06:45,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:06:45,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:06:45,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:06:45,546 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:06:45,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-18 20:06:45,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec126e356/ecfeef73316144168a8b5bfe76d7b04c/FLAG0a0fe906a [2020-08-18 20:06:46,207 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:06:46,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-18 20:06:46,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec126e356/ecfeef73316144168a8b5bfe76d7b04c/FLAG0a0fe906a [2020-08-18 20:06:46,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec126e356/ecfeef73316144168a8b5bfe76d7b04c [2020-08-18 20:06:46,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:06:46,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:06:46,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:06:46,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:06:46,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:06:46,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:06:46" (1/1) ... [2020-08-18 20:06:46,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:46, skipping insertion in model container [2020-08-18 20:06:46,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:06:46" (1/1) ... [2020-08-18 20:06:46,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:06:46,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:06:46,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:06:46,881 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:06:47,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:06:47,126 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:06:47,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47 WrapperNode [2020-08-18 20:06:47,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:06:47,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:06:47,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:06:47,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:06:47,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47" (1/1) ... [2020-08-18 20:06:47,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47" (1/1) ... [2020-08-18 20:06:47,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47" (1/1) ... [2020-08-18 20:06:47,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47" (1/1) ... [2020-08-18 20:06:47,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47" (1/1) ... [2020-08-18 20:06:47,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47" (1/1) ... [2020-08-18 20:06:47,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47" (1/1) ... [2020-08-18 20:06:47,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:06:47,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:06:47,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:06:47,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:06:47,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:06:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:06:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:06:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:06:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:06:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:06:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:06:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:06:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:06:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:06:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:06:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:06:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:06:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:06:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:06:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:06:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:06:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:06:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:06:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:06:47,327 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:06:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:06:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 20:06:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:06:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:06:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:06:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:06:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:06:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:06:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:06:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:06:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:06:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:06:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 20:06:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:06:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:06:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:06:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:06:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:06:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:06:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:06:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:06:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:06:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:06:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:06:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:06:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:06:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:06:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:06:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:06:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:06:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:06:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:06:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:06:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:06:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:06:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:06:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:06:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:06:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:06:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:06:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:06:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:06:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:06:47,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:06:47,335 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:06:47,335 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:06:47,335 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:06:47,335 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:06:47,335 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 20:06:47,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:06:47,336 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:06:47,336 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:06:47,336 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:06:47,336 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:06:47,336 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:06:47,337 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:06:47,337 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:06:47,337 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 20:06:47,337 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:06:47,337 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:06:47,337 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:06:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:06:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:06:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:06:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:06:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:06:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:06:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:06:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:06:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:06:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:06:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:06:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:06:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:06:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:06:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:06:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:06:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:06:48,443 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:06:48,444 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:06:48,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:06:48 BoogieIcfgContainer [2020-08-18 20:06:48,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:06:48,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:06:48,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:06:48,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:06:48,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:06:46" (1/3) ... [2020-08-18 20:06:48,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4298c739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:06:48, skipping insertion in model container [2020-08-18 20:06:48,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:06:47" (2/3) ... [2020-08-18 20:06:48,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4298c739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:06:48, skipping insertion in model container [2020-08-18 20:06:48,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:06:48" (3/3) ... [2020-08-18 20:06:48,461 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2020-08-18 20:06:48,471 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:06:48,481 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:06:48,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:06:48,525 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:06:48,525 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:06:48,526 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:06:48,526 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:06:48,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:06:48,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:06:48,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:06:48,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:06:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-18 20:06:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:06:48,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:48,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:48,567 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:48,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2020-08-18 20:06:48,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:48,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286896440] [2020-08-18 20:06:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,372 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:49,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:06:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:06:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:49,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286896440] [2020-08-18 20:06:49,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:49,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:06:49,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499722063] [2020-08-18 20:06:49,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:06:49,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:49,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:06:49,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:06:49,511 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2020-08-18 20:06:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:50,742 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2020-08-18 20:06:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:06:50,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 20:06:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:50,762 INFO L225 Difference]: With dead ends: 306 [2020-08-18 20:06:50,762 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 20:06:50,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:06:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 20:06:50,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2020-08-18 20:06:50,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-18 20:06:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-18 20:06:50,882 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2020-08-18 20:06:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:50,884 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-18 20:06:50,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:06:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-18 20:06:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:06:50,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:50,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:50,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:06:50,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:50,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:50,896 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2020-08-18 20:06:50,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:50,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899821345] [2020-08-18 20:06:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:51,313 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:51,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:51,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:51,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:06:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:06:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:51,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899821345] [2020-08-18 20:06:51,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:51,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:06:51,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306711941] [2020-08-18 20:06:51,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:06:51,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:51,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:06:51,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:06:51,405 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 5 states. [2020-08-18 20:06:51,888 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:52,880 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2020-08-18 20:06:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:06:52,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 20:06:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:52,884 INFO L225 Difference]: With dead ends: 247 [2020-08-18 20:06:52,884 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 20:06:52,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:06:52,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 20:06:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-18 20:06:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 20:06:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-18 20:06:52,932 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2020-08-18 20:06:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:52,933 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-18 20:06:52,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:06:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-18 20:06:52,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 20:06:52,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:52,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:52,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:06:52,935 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:52,936 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2020-08-18 20:06:52,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:52,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545909688] [2020-08-18 20:06:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:53,311 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:53,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:53,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:53,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:53,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:53,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:06:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:53,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:06:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:53,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545909688] [2020-08-18 20:06:53,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:53,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:06:53,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315547571] [2020-08-18 20:06:53,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:06:53,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:53,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:06:53,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:06:53,448 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 9 states. [2020-08-18 20:06:53,847 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:54,197 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:54,453 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:54,695 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:06:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:55,920 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2020-08-18 20:06:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:06:55,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 20:06:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:55,930 INFO L225 Difference]: With dead ends: 260 [2020-08-18 20:06:55,930 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 20:06:55,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:06:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 20:06:55,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-18 20:06:55,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 20:06:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-18 20:06:55,970 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2020-08-18 20:06:55,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:55,971 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-18 20:06:55,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:06:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-18 20:06:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 20:06:55,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:55,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:55,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:06:55,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:55,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:55,974 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2020-08-18 20:06:55,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:55,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031434771] [2020-08-18 20:06:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,260 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:56,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:06:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 20:06:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 20:06:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:56,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031434771] [2020-08-18 20:06:56,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:56,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:06:56,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299689642] [2020-08-18 20:06:56,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:06:56,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:56,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:06:56,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:06:56,422 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 7 states. [2020-08-18 20:06:56,847 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:06:58,098 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:06:58,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:06:58,792 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2020-08-18 20:06:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:06:58,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-18 20:06:58,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:06:58,803 INFO L225 Difference]: With dead ends: 359 [2020-08-18 20:06:58,804 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 20:06:58,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:06:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 20:06:58,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2020-08-18 20:06:58,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-18 20:06:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2020-08-18 20:06:58,879 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2020-08-18 20:06:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:06:58,880 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2020-08-18 20:06:58,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:06:58,880 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2020-08-18 20:06:58,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 20:06:58,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:06:58,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:06:58,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:06:58,883 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:06:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:06:58,883 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2020-08-18 20:06:58,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:06:58,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966918545] [2020-08-18 20:06:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:06:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,213 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:06:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:06:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:06:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:06:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:06:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:06:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:06:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:06:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:06:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:06:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:06:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 20:06:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 20:06:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:06:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:06:59,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966918545] [2020-08-18 20:06:59,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:06:59,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:06:59,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974781097] [2020-08-18 20:06:59,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:06:59,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:06:59,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:06:59,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:06:59,322 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2020-08-18 20:06:59,727 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:00,971 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:01,236 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:01,476 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:01,706 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:02,996 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2020-08-18 20:07:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 20:07:02,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 20:07:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:03,004 INFO L225 Difference]: With dead ends: 626 [2020-08-18 20:07:03,004 INFO L226 Difference]: Without dead ends: 444 [2020-08-18 20:07:03,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 20:07:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-08-18 20:07:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2020-08-18 20:07:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-18 20:07:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2020-08-18 20:07:03,086 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2020-08-18 20:07:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:03,087 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2020-08-18 20:07:03,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:07:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2020-08-18 20:07:03,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 20:07:03,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:03,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:03,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:07:03,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2020-08-18 20:07:03,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:03,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019340569] [2020-08-18 20:07:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,413 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:03,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:07:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:07:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 20:07:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:07:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:03,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019340569] [2020-08-18 20:07:03,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:03,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:07:03,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011432982] [2020-08-18 20:07:03,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:07:03,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:07:03,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:07:03,561 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 10 states. [2020-08-18 20:07:03,961 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:05,099 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:05,347 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:05,579 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:05,831 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:06,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:06,798 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2020-08-18 20:07:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:07:06,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 20:07:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:06,803 INFO L225 Difference]: With dead ends: 822 [2020-08-18 20:07:06,803 INFO L226 Difference]: Without dead ends: 482 [2020-08-18 20:07:06,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 20:07:06,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-18 20:07:06,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2020-08-18 20:07:06,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-18 20:07:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-18 20:07:06,884 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2020-08-18 20:07:06,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:06,884 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-18 20:07:06,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:07:06,885 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-18 20:07:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 20:07:06,886 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:06,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:06,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:07:06,887 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:06,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2020-08-18 20:07:06,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:06,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179548338] [2020-08-18 20:07:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,142 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:07,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:07:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:07:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:07:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:07:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:07,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179548338] [2020-08-18 20:07:07,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:07,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:07:07,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314817033] [2020-08-18 20:07:07,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:07:07,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:07,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:07:07,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:07:07,291 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 10 states. [2020-08-18 20:07:08,395 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:08,659 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:07:08,924 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:09,165 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:10,243 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2020-08-18 20:07:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:07:10,248 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-18 20:07:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:10,251 INFO L225 Difference]: With dead ends: 825 [2020-08-18 20:07:10,252 INFO L226 Difference]: Without dead ends: 486 [2020-08-18 20:07:10,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:07:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-18 20:07:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2020-08-18 20:07:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-08-18 20:07:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2020-08-18 20:07:10,323 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2020-08-18 20:07:10,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:10,323 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2020-08-18 20:07:10,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:07:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2020-08-18 20:07:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 20:07:10,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:10,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:10,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:07:10,326 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:10,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:10,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2020-08-18 20:07:10,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:10,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960066937] [2020-08-18 20:07:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,577 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:07:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:07:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:07:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:07:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:10,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960066937] [2020-08-18 20:07:10,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:10,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:07:10,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851380558] [2020-08-18 20:07:10,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:07:10,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:10,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:07:10,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:07:10,710 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 12 states. [2020-08-18 20:07:11,662 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:11,893 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:12,121 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:12,865 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:13,133 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:13,377 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:14,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:14,637 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2020-08-18 20:07:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:07:14,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-18 20:07:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:14,644 INFO L225 Difference]: With dead ends: 849 [2020-08-18 20:07:14,644 INFO L226 Difference]: Without dead ends: 500 [2020-08-18 20:07:14,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:07:14,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-18 20:07:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-18 20:07:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 20:07:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2020-08-18 20:07:14,719 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2020-08-18 20:07:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:14,719 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2020-08-18 20:07:14,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:07:14,720 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2020-08-18 20:07:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 20:07:14,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:14,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:14,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:07:14,722 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:14,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:14,723 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2020-08-18 20:07:14,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:14,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367908714] [2020-08-18 20:07:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:14,996 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:07:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:07:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:07:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:07:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:15,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367908714] [2020-08-18 20:07:15,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:15,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:07:15,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077236892] [2020-08-18 20:07:15,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:07:15,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:15,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:07:15,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:07:15,125 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 8 states. [2020-08-18 20:07:15,595 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:16,122 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:18,556 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2020-08-18 20:07:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:07:18,556 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-18 20:07:18,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:18,563 INFO L225 Difference]: With dead ends: 1197 [2020-08-18 20:07:18,564 INFO L226 Difference]: Without dead ends: 840 [2020-08-18 20:07:18,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 20:07:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-08-18 20:07:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2020-08-18 20:07:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-08-18 20:07:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2020-08-18 20:07:18,710 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2020-08-18 20:07:18,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:18,711 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2020-08-18 20:07:18,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:07:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2020-08-18 20:07:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 20:07:18,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:18,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:18,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:07:18,717 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:18,717 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2020-08-18 20:07:18,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:18,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882374067] [2020-08-18 20:07:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,007 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:07:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:07:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:07:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:19,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882374067] [2020-08-18 20:07:19,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:19,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:07:19,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166599659] [2020-08-18 20:07:19,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:07:19,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:19,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:07:19,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:07:19,116 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand 8 states. [2020-08-18 20:07:19,687 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:22,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:22,320 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2020-08-18 20:07:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 20:07:22,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-18 20:07:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:22,329 INFO L225 Difference]: With dead ends: 1377 [2020-08-18 20:07:22,329 INFO L226 Difference]: Without dead ends: 1374 [2020-08-18 20:07:22,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:07:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-08-18 20:07:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2020-08-18 20:07:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-08-18 20:07:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2020-08-18 20:07:22,600 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2020-08-18 20:07:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:22,601 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2020-08-18 20:07:22,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:07:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2020-08-18 20:07:22,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 20:07:22,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:22,606 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:22,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:07:22,606 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:22,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:22,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2020-08-18 20:07:22,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:22,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046436974] [2020-08-18 20:07:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:22,925 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:22,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:22,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:22,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:22,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:22,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:07:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:07:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:07:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 20:07:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 20:07:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 20:07:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-18 20:07:23,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046436974] [2020-08-18 20:07:23,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:07:23,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 20:07:23,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196935810] [2020-08-18 20:07:23,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:07:23,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:23,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:07:23,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:07:23,205 INFO L87 Difference]: Start difference. First operand 1147 states and 1356 transitions. Second operand 13 states. [2020-08-18 20:07:23,751 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:24,006 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:24,233 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:25,268 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:27,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:27,252 INFO L93 Difference]: Finished difference Result 2071 states and 2568 transitions. [2020-08-18 20:07:27,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 20:07:27,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 20:07:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:27,265 INFO L225 Difference]: With dead ends: 2071 [2020-08-18 20:07:27,266 INFO L226 Difference]: Without dead ends: 1084 [2020-08-18 20:07:27,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 20:07:27,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-08-18 20:07:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 948. [2020-08-18 20:07:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-18 20:07:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1106 transitions. [2020-08-18 20:07:27,506 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1106 transitions. Word has length 152 [2020-08-18 20:07:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:27,506 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1106 transitions. [2020-08-18 20:07:27,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:07:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1106 transitions. [2020-08-18 20:07:27,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 20:07:27,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:27,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:27,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:07:27,511 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:27,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1764550393, now seen corresponding path program 1 times [2020-08-18 20:07:27,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:27,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594357086] [2020-08-18 20:07:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,884 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:07:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:07:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:07:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 20:07:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 20:07:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:07:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 20:07:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 20:07:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-18 20:07:28,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594357086] [2020-08-18 20:07:28,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:07:28,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 20:07:28,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55343883] [2020-08-18 20:07:28,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 20:07:28,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:28,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 20:07:28,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:07:28,304 INFO L87 Difference]: Start difference. First operand 948 states and 1106 transitions. Second operand 15 states. [2020-08-18 20:07:29,235 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:30,305 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:32,409 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 20:07:32,907 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 20:07:33,382 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-18 20:07:34,397 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 20:07:34,679 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:34,923 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:07:35,166 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:07:36,890 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-18 20:07:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:37,892 INFO L93 Difference]: Finished difference Result 3031 states and 3876 transitions. [2020-08-18 20:07:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-08-18 20:07:37,892 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 154 [2020-08-18 20:07:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:37,906 INFO L225 Difference]: With dead ends: 3031 [2020-08-18 20:07:37,906 INFO L226 Difference]: Without dead ends: 2243 [2020-08-18 20:07:37,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2020-08-18 20:07:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-08-18 20:07:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1920. [2020-08-18 20:07:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-08-18 20:07:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2261 transitions. [2020-08-18 20:07:38,383 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2261 transitions. Word has length 154 [2020-08-18 20:07:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:38,384 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2261 transitions. [2020-08-18 20:07:38,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 20:07:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2261 transitions. [2020-08-18 20:07:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 20:07:38,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:38,388 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:38,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:07:38,389 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:38,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:38,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1836936951, now seen corresponding path program 1 times [2020-08-18 20:07:38,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:38,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506406651] [2020-08-18 20:07:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,695 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:38,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:07:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:07:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:07:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:07:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:07:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 20:07:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 20:07:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:07:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:07:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:07:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 20:07:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 20:07:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-18 20:07:38,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506406651] [2020-08-18 20:07:38,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:07:38,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 20:07:38,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138764359] [2020-08-18 20:07:38,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 20:07:38,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 20:07:38,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:07:38,963 INFO L87 Difference]: Start difference. First operand 1920 states and 2261 transitions. Second operand 15 states. [2020-08-18 20:07:39,834 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:07:40,179 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:40,415 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:07:42,223 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190