/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:05:09,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:05:09,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:05:09,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:05:09,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:05:09,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:05:09,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:05:09,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:05:09,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:05:09,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:05:09,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:05:09,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:05:09,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:05:09,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:05:09,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:05:09,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:05:09,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:05:09,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:05:09,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:05:09,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:05:09,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:05:09,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:05:09,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:05:09,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:05:09,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:05:09,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:05:09,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:05:09,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:05:09,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:05:09,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:05:09,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:05:09,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:05:09,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:05:09,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:05:09,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:05:09,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:05:09,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:05:09,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:05:09,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:05:09,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:05:09,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:05:09,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:05:09,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:05:09,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:05:09,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:05:09,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:05:09,161 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:05:09,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:05:09,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:05:09,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:05:09,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:05:09,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:05:09,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:05:09,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:05:09,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:05:09,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:05:09,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:05:09,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:05:09,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:05:09,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:05:09,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:05:09,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:05:09,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:05:09,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:05:09,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:05:09,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:05:09,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:05:09,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:05:09,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:05:09,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:05:09,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:05:09,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:05:09,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:05:09,506 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:05:09,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:05:09,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:05:09,511 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:05:09,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2020-08-18 16:05:09,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b97ba2a/5f3104a98e6240b78dadfb3eac7a755b/FLAG93b992afc [2020-08-18 16:05:10,090 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:05:10,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2020-08-18 16:05:10,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b97ba2a/5f3104a98e6240b78dadfb3eac7a755b/FLAG93b992afc [2020-08-18 16:05:10,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b97ba2a/5f3104a98e6240b78dadfb3eac7a755b [2020-08-18 16:05:10,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:05:10,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:05:10,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:05:10,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:05:10,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:05:10,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:05:10" (1/1) ... [2020-08-18 16:05:10,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121db1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:10, skipping insertion in model container [2020-08-18 16:05:10,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:05:10" (1/1) ... [2020-08-18 16:05:10,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:05:10,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:05:10,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:05:10,992 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:05:11,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:05:11,118 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:05:11,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11 WrapperNode [2020-08-18 16:05:11,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:05:11,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:05:11,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:05:11,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:05:11,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11" (1/1) ... [2020-08-18 16:05:11,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11" (1/1) ... [2020-08-18 16:05:11,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11" (1/1) ... [2020-08-18 16:05:11,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11" (1/1) ... [2020-08-18 16:05:11,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11" (1/1) ... [2020-08-18 16:05:11,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11" (1/1) ... [2020-08-18 16:05:11,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11" (1/1) ... [2020-08-18 16:05:11,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:05:11,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:05:11,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:05:11,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:05:11,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:05:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:05:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:05:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:05:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:05:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:05:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:05:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:05:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:05:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:05:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:05:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:05:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:05:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:05:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:05:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:05:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:05:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:05:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:05:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:05:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:05:11,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:05:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:05:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:05:11,280 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:05:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:05:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:05:11,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:05:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:05:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:05:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:05:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:05:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:05:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:05:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:05:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:05:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:05:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:05:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:05:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:05:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:05:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:05:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:05:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:05:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:05:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:05:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:05:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:05:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:05:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:05:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:05:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:05:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:05:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:05:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:05:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:05:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:05:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:05:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:05:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:05:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:05:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:05:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:05:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:05:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:05:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:05:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:05:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:05:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:05:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:05:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:05:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:05:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:05:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:05:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:05:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:05:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:05:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:05:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:05:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:05:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:05:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:05:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:05:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:05:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:05:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:05:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:05:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:05:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:05:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:05:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:05:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:05:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:05:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:05:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:05:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:05:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:05:12,365 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:05:12,365 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:05:12,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:05:12 BoogieIcfgContainer [2020-08-18 16:05:12,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:05:12,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:05:12,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:05:12,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:05:12,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:05:10" (1/3) ... [2020-08-18 16:05:12,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2700cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:05:12, skipping insertion in model container [2020-08-18 16:05:12,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:05:11" (2/3) ... [2020-08-18 16:05:12,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2700cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:05:12, skipping insertion in model container [2020-08-18 16:05:12,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:05:12" (3/3) ... [2020-08-18 16:05:12,380 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2020-08-18 16:05:12,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:05:12,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:05:12,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:05:12,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:05:12,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:05:12,440 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:05:12,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:05:12,441 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:05:12,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:05:12,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:05:12,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:05:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-08-18 16:05:12,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:05:12,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:12,479 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 16:05:12,479 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1859141612, now seen corresponding path program 1 times [2020-08-18 16:05:12,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:12,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43858820] [2020-08-18 16:05:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:13,202 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:13,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:13,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:13,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:13,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:13,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:05:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:13,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:05:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:13,298 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 16:05:13,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43858820] [2020-08-18 16:05:13,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:13,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:05:13,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317844287] [2020-08-18 16:05:13,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:05:13,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:13,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:05:13,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:05:13,325 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 4 states. [2020-08-18 16:05:14,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:14,548 INFO L93 Difference]: Finished difference Result 317 states and 416 transitions. [2020-08-18 16:05:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:05:14,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 16:05:14,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:14,565 INFO L225 Difference]: With dead ends: 317 [2020-08-18 16:05:14,565 INFO L226 Difference]: Without dead ends: 177 [2020-08-18 16:05:14,570 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 16:05:14,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-18 16:05:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 141. [2020-08-18 16:05:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-18 16:05:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2020-08-18 16:05:14,663 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 51 [2020-08-18 16:05:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:14,664 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2020-08-18 16:05:14,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:05:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2020-08-18 16:05:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:05:14,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:14,671 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 16:05:14,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:05:14,672 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:14,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:14,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2121847036, now seen corresponding path program 1 times [2020-08-18 16:05:14,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:14,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831821135] [2020-08-18 16:05:14,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:15,027 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:15,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:15,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:15,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:15,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:15,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:05:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:05:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:15,107 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 16:05:15,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831821135] [2020-08-18 16:05:15,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:15,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:05:15,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606959954] [2020-08-18 16:05:15,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:05:15,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:15,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:05:15,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:05:15,113 INFO L87 Difference]: Start difference. First operand 141 states and 168 transitions. Second operand 5 states. [2020-08-18 16:05:15,562 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:16,635 INFO L93 Difference]: Finished difference Result 256 states and 319 transitions. [2020-08-18 16:05:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:05:16,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 16:05:16,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:16,639 INFO L225 Difference]: With dead ends: 256 [2020-08-18 16:05:16,639 INFO L226 Difference]: Without dead ends: 167 [2020-08-18 16:05:16,641 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 16:05:16,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-18 16:05:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2020-08-18 16:05:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 16:05:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2020-08-18 16:05:16,683 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 52 [2020-08-18 16:05:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:16,683 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2020-08-18 16:05:16,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:05:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2020-08-18 16:05:16,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 16:05:16,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:16,686 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] [2020-08-18 16:05:16,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:05:16,687 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:16,687 INFO L82 PathProgramCache]: Analyzing trace with hash 51071948, now seen corresponding path program 1 times [2020-08-18 16:05:16,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:16,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111652568] [2020-08-18 16:05:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:17,008 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:17,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:17,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:17,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:17,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:05:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:17,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:05:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:17,129 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 16:05:17,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111652568] [2020-08-18 16:05:17,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:17,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:05:17,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460167660] [2020-08-18 16:05:17,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:05:17,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:17,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:05:17,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:05:17,135 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand 9 states. [2020-08-18 16:05:17,501 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:17,855 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:18,105 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:18,334 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:19,168 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:21,222 INFO L93 Difference]: Finished difference Result 448 states and 568 transitions. [2020-08-18 16:05:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:05:21,223 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 16:05:21,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:21,228 INFO L225 Difference]: With dead ends: 448 [2020-08-18 16:05:21,228 INFO L226 Difference]: Without dead ends: 344 [2020-08-18 16:05:21,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:05:21,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-08-18 16:05:21,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 279. [2020-08-18 16:05:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-08-18 16:05:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 342 transitions. [2020-08-18 16:05:21,313 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 342 transitions. Word has length 56 [2020-08-18 16:05:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:21,314 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 342 transitions. [2020-08-18 16:05:21,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:05:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 342 transitions. [2020-08-18 16:05:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 16:05:21,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:21,317 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] [2020-08-18 16:05:21,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:05:21,318 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:21,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1476511447, now seen corresponding path program 1 times [2020-08-18 16:05:21,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:21,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577902833] [2020-08-18 16:05:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,652 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:21,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:05:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:05:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:05:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:21,773 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 16:05:21,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577902833] [2020-08-18 16:05:21,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:21,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:05:21,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088662430] [2020-08-18 16:05:21,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:05:21,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:21,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:05:21,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:05:21,775 INFO L87 Difference]: Start difference. First operand 279 states and 342 transitions. Second operand 9 states. [2020-08-18 16:05:22,148 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:23,175 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:23,564 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:23,882 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:24,206 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:25,707 INFO L93 Difference]: Finished difference Result 895 states and 1185 transitions. [2020-08-18 16:05:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:05:25,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 16:05:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:25,716 INFO L225 Difference]: With dead ends: 895 [2020-08-18 16:05:25,716 INFO L226 Difference]: Without dead ends: 644 [2020-08-18 16:05:25,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 16:05:25,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-18 16:05:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 506. [2020-08-18 16:05:25,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-08-18 16:05:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 624 transitions. [2020-08-18 16:05:25,864 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 624 transitions. Word has length 62 [2020-08-18 16:05:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:25,864 INFO L479 AbstractCegarLoop]: Abstraction has 506 states and 624 transitions. [2020-08-18 16:05:25,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:05:25,865 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 624 transitions. [2020-08-18 16:05:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 16:05:25,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:25,868 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] [2020-08-18 16:05:25,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:05:25,868 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:25,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:25,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1658122107, now seen corresponding path program 1 times [2020-08-18 16:05:25,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:25,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675145540] [2020-08-18 16:05:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,161 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:26,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:05:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:05:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 16:05:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:26,292 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 16:05:26,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675145540] [2020-08-18 16:05:26,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:26,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:05:26,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947734160] [2020-08-18 16:05:26,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:05:26,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:26,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:05:26,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:05:26,295 INFO L87 Difference]: Start difference. First operand 506 states and 624 transitions. Second operand 10 states. [2020-08-18 16:05:26,681 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:27,695 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:27,984 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:28,234 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:29,021 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:30,216 INFO L93 Difference]: Finished difference Result 1423 states and 1942 transitions. [2020-08-18 16:05:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 16:05:30,217 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 16:05:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:30,225 INFO L225 Difference]: With dead ends: 1423 [2020-08-18 16:05:30,225 INFO L226 Difference]: Without dead ends: 945 [2020-08-18 16:05:30,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:05:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-08-18 16:05:30,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 749. [2020-08-18 16:05:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-18 16:05:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 911 transitions. [2020-08-18 16:05:30,427 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 911 transitions. Word has length 66 [2020-08-18 16:05:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:30,430 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 911 transitions. [2020-08-18 16:05:30,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:05:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 911 transitions. [2020-08-18 16:05:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:05:30,436 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:30,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:30,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:05:30,437 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:30,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1979078966, now seen corresponding path program 1 times [2020-08-18 16:05:30,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:30,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044672602] [2020-08-18 16:05:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,734 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:30,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:05:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:05:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:05:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:05:30,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044672602] [2020-08-18 16:05:30,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:30,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:05:30,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960792022] [2020-08-18 16:05:30,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:05:30,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:30,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:05:30,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:05:30,904 INFO L87 Difference]: Start difference. First operand 749 states and 911 transitions. Second operand 10 states. [2020-08-18 16:05:31,327 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:32,280 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:32,547 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:05:32,832 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:33,084 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:35,408 INFO L93 Difference]: Finished difference Result 2518 states and 3561 transitions. [2020-08-18 16:05:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:05:35,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-18 16:05:35,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:35,430 INFO L225 Difference]: With dead ends: 2518 [2020-08-18 16:05:35,431 INFO L226 Difference]: Without dead ends: 1797 [2020-08-18 16:05:35,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-18 16:05:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-08-18 16:05:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1359. [2020-08-18 16:05:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-08-18 16:05:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1650 transitions. [2020-08-18 16:05:35,723 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1650 transitions. Word has length 103 [2020-08-18 16:05:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:35,723 INFO L479 AbstractCegarLoop]: Abstraction has 1359 states and 1650 transitions. [2020-08-18 16:05:35,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:05:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1650 transitions. [2020-08-18 16:05:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:05:35,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:35,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:35,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:05:35,728 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:35,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:35,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1738538837, now seen corresponding path program 1 times [2020-08-18 16:05:35,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:35,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200596086] [2020-08-18 16:05:35,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,028 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:36,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:05:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:05:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:05:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:05:36,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200596086] [2020-08-18 16:05:36,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:36,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:05:36,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582397900] [2020-08-18 16:05:36,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:05:36,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:36,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:05:36,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:05:36,219 INFO L87 Difference]: Start difference. First operand 1359 states and 1650 transitions. Second operand 10 states. [2020-08-18 16:05:37,286 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:37,528 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:05:37,791 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:38,040 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:39,301 INFO L93 Difference]: Finished difference Result 3144 states and 4258 transitions. [2020-08-18 16:05:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:05:39,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-18 16:05:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:39,316 INFO L225 Difference]: With dead ends: 3144 [2020-08-18 16:05:39,316 INFO L226 Difference]: Without dead ends: 1813 [2020-08-18 16:05:39,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 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 16:05:39,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2020-08-18 16:05:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1399. [2020-08-18 16:05:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2020-08-18 16:05:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1690 transitions. [2020-08-18 16:05:39,600 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1690 transitions. Word has length 103 [2020-08-18 16:05:39,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:39,601 INFO L479 AbstractCegarLoop]: Abstraction has 1399 states and 1690 transitions. [2020-08-18 16:05:39,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:05:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1690 transitions. [2020-08-18 16:05:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 16:05:39,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:39,606 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:39,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:05:39,606 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:39,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:39,606 INFO L82 PathProgramCache]: Analyzing trace with hash 189733865, now seen corresponding path program 1 times [2020-08-18 16:05:39,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:39,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127299371] [2020-08-18 16:05:39,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,032 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:40,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:05:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 16:05:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:05:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:05:40,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127299371] [2020-08-18 16:05:40,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:40,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:05:40,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098634544] [2020-08-18 16:05:40,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:05:40,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:40,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:05:40,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:05:40,275 INFO L87 Difference]: Start difference. First operand 1399 states and 1690 transitions. Second operand 12 states. [2020-08-18 16:05:40,866 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:41,110 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:41,326 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:42,044 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:42,315 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:42,561 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:43,906 INFO L93 Difference]: Finished difference Result 2768 states and 3642 transitions. [2020-08-18 16:05:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:05:43,907 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-08-18 16:05:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:43,916 INFO L225 Difference]: With dead ends: 2768 [2020-08-18 16:05:43,916 INFO L226 Difference]: Without dead ends: 1397 [2020-08-18 16:05:43,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 16:05:43,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2020-08-18 16:05:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1119. [2020-08-18 16:05:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-08-18 16:05:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1322 transitions. [2020-08-18 16:05:44,122 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1322 transitions. Word has length 103 [2020-08-18 16:05:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:44,122 INFO L479 AbstractCegarLoop]: Abstraction has 1119 states and 1322 transitions. [2020-08-18 16:05:44,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:05:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1322 transitions. [2020-08-18 16:05:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 16:05:44,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:44,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:44,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:05:44,127 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:44,128 INFO L82 PathProgramCache]: Analyzing trace with hash -237992882, now seen corresponding path program 1 times [2020-08-18 16:05:44,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:44,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455721722] [2020-08-18 16:05:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,524 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:05:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:05:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:05:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 16:05:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:05:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:05:44,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455721722] [2020-08-18 16:05:44,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:05:44,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 16:05:44,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075713547] [2020-08-18 16:05:44,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 16:05:44,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:44,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 16:05:44,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:05:44,899 INFO L87 Difference]: Start difference. First operand 1119 states and 1322 transitions. Second operand 18 states. [2020-08-18 16:05:45,709 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:46,011 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:05:46,248 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:05:46,477 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:05:47,127 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:47,699 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:48,095 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:49,485 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:49,786 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:50,084 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:50,380 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:50,887 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 16:05:51,386 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 16:05:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:53,203 INFO L93 Difference]: Finished difference Result 2496 states and 3148 transitions. [2020-08-18 16:05:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 16:05:53,204 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-08-18 16:05:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:53,212 INFO L225 Difference]: With dead ends: 2496 [2020-08-18 16:05:53,213 INFO L226 Difference]: Without dead ends: 1405 [2020-08-18 16:05:53,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 16:05:53,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-08-18 16:05:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1109. [2020-08-18 16:05:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-18 16:05:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1299 transitions. [2020-08-18 16:05:53,473 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1299 transitions. Word has length 107 [2020-08-18 16:05:53,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:53,475 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1299 transitions. [2020-08-18 16:05:53,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 16:05:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1299 transitions. [2020-08-18 16:05:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-18 16:05:53,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:53,484 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:53,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:05:53,484 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:53,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:53,485 INFO L82 PathProgramCache]: Analyzing trace with hash 926596768, now seen corresponding path program 1 times [2020-08-18 16:05:53,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:53,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516186338] [2020-08-18 16:05:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,763 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:53,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:05:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:05:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:05:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 16:05:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 16:05:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 16:05:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:53,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:05:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 16:05:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 16:05:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 16:05:54,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516186338] [2020-08-18 16:05:54,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:05:54,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 16:05:54,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781500638] [2020-08-18 16:05:54,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 16:05:54,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:54,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 16:05:54,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:05:54,113 INFO L87 Difference]: Start difference. First operand 1109 states and 1299 transitions. Second operand 19 states. [2020-08-18 16:05:54,618 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:54,968 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:05:55,250 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:05:55,488 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:05:56,261 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:56,835 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:57,231 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:58,533 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:58,843 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:59,168 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:59,453 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:06:00,454 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:06:00,696 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:06:01,202 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:06:01,437 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:06:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:06:02,083 INFO L93 Difference]: Finished difference Result 2067 states and 2619 transitions. [2020-08-18 16:06:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 16:06:02,083 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 158 [2020-08-18 16:06:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:06:02,084 INFO L225 Difference]: With dead ends: 2067 [2020-08-18 16:06:02,085 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:06:02,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-18 16:06:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:06:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:06:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:06:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:06:02,094 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2020-08-18 16:06:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:06:02,094 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:06:02,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 16:06:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:06:02,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:06:02,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:06:02,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:06:04,181 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 423 DAG size of output: 291 [2020-08-18 16:06:04,974 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 423 DAG size of output: 291 [2020-08-18 16:06:05,619 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14 [2020-08-18 16:06:05,906 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14 [2020-08-18 16:06:06,031 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14 [2020-08-18 16:06:06,773 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 196 [2020-08-18 16:06:07,640 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 14 [2020-08-18 16:06:08,247 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 275