/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:00:53,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:00:53,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:00:53,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:00:53,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:00:53,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:00:53,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:00:53,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:00:53,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:00:53,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:00:53,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:00:53,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:00:53,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:00:53,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:00:53,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:00:53,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:00:53,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:00:53,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:00:53,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:00:53,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:00:53,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:00:53,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:00:53,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:00:53,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:00:53,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:00:53,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:00:53,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:00:53,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:00:53,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:00:53,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:00:53,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:00:53,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:00:53,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:00:53,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:00:53,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:00:53,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:00:53,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:00:53,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:00:53,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:00:53,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:00:53,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:00:53,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:00:53,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:00:53,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:00:53,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:00:53,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:00:53,146 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:00:53,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:00:53,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:00:53,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:00:53,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:00:53,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:00:53,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:00:53,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:00:53,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:00:53,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:00:53,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:00:53,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:00:53,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:00:53,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:00:53,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:00:53,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:00:53,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:00:53,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:00:53,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:00:53,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:00:53,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:00:53,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:00:53,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:00:53,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:00:53,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:00:53,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:00:53,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:00:53,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:00:53,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:00:53,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:00:53,499 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:00:53,500 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 22:00:53,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/969e85a41/1fed7d74f40c42e4b535bf2e3942d0a8/FLAG10d6e277c [2020-08-21 22:00:54,156 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:00:54,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 22:00:54,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/969e85a41/1fed7d74f40c42e4b535bf2e3942d0a8/FLAG10d6e277c [2020-08-21 22:00:54,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/969e85a41/1fed7d74f40c42e4b535bf2e3942d0a8 [2020-08-21 22:00:54,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:00:54,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:00:54,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:00:54,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:00:54,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:00:54,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:00:54" (1/1) ... [2020-08-21 22:00:54,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e65116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:54, skipping insertion in model container [2020-08-21 22:00:54,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:00:54" (1/1) ... [2020-08-21 22:00:54,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:00:54,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:00:54,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:00:54,965 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:00:55,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:00:55,091 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:00:55,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55 WrapperNode [2020-08-21 22:00:55,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:00:55,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:00:55,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:00:55,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:00:55,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55" (1/1) ... [2020-08-21 22:00:55,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55" (1/1) ... [2020-08-21 22:00:55,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55" (1/1) ... [2020-08-21 22:00:55,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55" (1/1) ... [2020-08-21 22:00:55,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55" (1/1) ... [2020-08-21 22:00:55,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55" (1/1) ... [2020-08-21 22:00:55,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55" (1/1) ... [2020-08-21 22:00:55,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:00:55,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:00:55,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:00:55,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:00:55,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:00:55,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:00:55,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:00:55,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:00:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:00:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:00:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:00:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:00:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:00:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:00:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:00:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:00:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:00:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:00:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:00:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:00:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:00:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:00:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:00:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:00:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:00:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:00:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:00:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:00:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:00:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:00:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:00:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:00:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:00:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:00:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:00:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:00:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:00:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:00:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:00:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:00:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:00:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:00:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:00:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:00:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:00:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:00:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:00:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:00:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:00:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:00:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:00:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:00:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:00:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:00:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:00:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:00:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:00:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:00:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:00:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:00:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:00:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:00:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:00:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:00:55,294 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:00:55,294 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:00:55,294 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:00:55,294 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:00:55,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:00:55,294 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:00:55,294 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:00:55,294 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:00:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:00:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:00:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:00:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:00:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:00:55,295 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:00:55,296 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:00:55,296 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:00:55,296 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:00:55,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:00:55,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:00:55,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:00:55,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:00:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:00:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:00:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:00:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:00:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:00:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:00:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:00:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:00:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:00:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:00:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:00:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:00:56,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:00:56,336 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:00:56,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:00:56 BoogieIcfgContainer [2020-08-21 22:00:56,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:00:56,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:00:56,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:00:56,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:00:56,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:00:54" (1/3) ... [2020-08-21 22:00:56,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9e6ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:00:56, skipping insertion in model container [2020-08-21 22:00:56,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:55" (2/3) ... [2020-08-21 22:00:56,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9e6ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:00:56, skipping insertion in model container [2020-08-21 22:00:56,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:00:56" (3/3) ... [2020-08-21 22:00:56,349 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-21 22:00:56,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:00:56,367 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:00:56,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:00:56,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:00:56,406 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:00:56,407 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:00:56,407 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:00:56,407 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:00:56,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:00:56,408 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:00:56,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:00:56,430 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 22:00:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:00:56,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:56,441 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] [2020-08-21 22:00:56,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:56,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:56,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-21 22:00:56,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:56,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659310442] [2020-08-21 22:00:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,098 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:00:57,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:00:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:00:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:00:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:00:57,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659310442] [2020-08-21 22:00:57,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:00:57,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:00:57,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130142893] [2020-08-21 22:00:57,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:00:57,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:57,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:00:57,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:00:57,217 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 22:00:58,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:58,327 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-21 22:00:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:00:58,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 22:00:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:58,345 INFO L225 Difference]: With dead ends: 296 [2020-08-21 22:00:58,345 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 22:00:58,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:00:58,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 22:00:58,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-21 22:00:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 22:00:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-21 22:00:58,446 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-21 22:00:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:58,446 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-21 22:00:58,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:00:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-21 22:00:58,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 22:00:58,450 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:58,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:58,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:00:58,451 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:58,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:58,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-21 22:00:58,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:58,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432849800] [2020-08-21 22:00:58,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:58,871 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:00:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:58,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:58,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:58,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:00:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:00:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:00:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:00:58,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432849800] [2020-08-21 22:00:58,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:00:58,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:00:58,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216911002] [2020-08-21 22:00:58,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:00:58,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:00:58,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:00:58,953 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-21 22:00:59,393 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:00,213 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-21 22:01:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:01:00,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 22:01:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:00,218 INFO L225 Difference]: With dead ends: 225 [2020-08-21 22:01:00,218 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 22:01:00,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:01:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 22:01:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 22:01:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 22:01:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-21 22:01:00,254 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-21 22:01:00,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:00,255 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-21 22:01:00,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:01:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-21 22:01:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 22:01:00,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:00,258 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] [2020-08-21 22:01:00,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:01:00,258 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:00,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:00,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-21 22:01:00,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:00,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365276842] [2020-08-21 22:01:00,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,574 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:00,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:01:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:01:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:01:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:01:00,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365276842] [2020-08-21 22:01:00,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:00,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:01:00,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21017187] [2020-08-21 22:01:00,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:01:00,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:00,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:01:00,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:01:00,725 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-21 22:01:01,101 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:01,424 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:01,675 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:01,973 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:03,132 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-21 22:01:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 22:01:03,133 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 22:01:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:03,135 INFO L225 Difference]: With dead ends: 238 [2020-08-21 22:01:03,136 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 22:01:03,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:01:03,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 22:01:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 22:01:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 22:01:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-21 22:01:03,170 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-21 22:01:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:03,171 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-21 22:01:03,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:01:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-21 22:01:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 22:01:03,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:03,174 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] [2020-08-21 22:01:03,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:01:03,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:03,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-21 22:01:03,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:03,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661653119] [2020-08-21 22:01:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,514 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:03,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:01:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:01:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 22:01:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 22:01:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 22:01:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:01:03,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661653119] [2020-08-21 22:01:03,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:03,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:01:03,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281806474] [2020-08-21 22:01:03,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:01:03,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:03,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:01:03,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:01:03,622 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-21 22:01:03,946 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:05,136 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:05,811 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-21 22:01:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:01:05,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-21 22:01:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:05,817 INFO L225 Difference]: With dead ends: 338 [2020-08-21 22:01:05,817 INFO L226 Difference]: Without dead ends: 244 [2020-08-21 22:01:05,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:01:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-21 22:01:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-21 22:01:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-21 22:01:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-21 22:01:05,870 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-21 22:01:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:05,870 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-21 22:01:05,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:01:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-21 22:01:05,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-21 22:01:05,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:05,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:05,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:01:05,873 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:05,874 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-21 22:01:05,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:05,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85338675] [2020-08-21 22:01:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,159 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:06,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:01:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:01:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:01:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 22:01:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:01:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 22:01:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:01:06,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85338675] [2020-08-21 22:01:06,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:06,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:01:06,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370476239] [2020-08-21 22:01:06,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:01:06,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:06,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:01:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:01:06,279 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-21 22:01:06,662 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:08,152 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:08,423 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:08,660 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:08,899 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:09,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:09,509 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-21 22:01:09,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:01:09,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-21 22:01:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:09,516 INFO L225 Difference]: With dead ends: 555 [2020-08-21 22:01:09,516 INFO L226 Difference]: Without dead ends: 378 [2020-08-21 22:01:09,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:01:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-21 22:01:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-21 22:01:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 22:01:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-21 22:01:09,589 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-21 22:01:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:09,590 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-21 22:01:09,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:01:09,590 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-21 22:01:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 22:01:09,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:09,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:09,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:01:09,592 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:09,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:09,593 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-21 22:01:09,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:09,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214250608] [2020-08-21 22:01:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,863 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:09,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:01:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:01:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:01:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:01:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:01:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 22:01:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:09,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 22:01:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:01:10,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214250608] [2020-08-21 22:01:10,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:10,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:01:10,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230520056] [2020-08-21 22:01:10,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:01:10,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:10,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:01:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:01:10,017 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-21 22:01:10,364 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:10,901 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:12,467 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:13,960 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-21 22:01:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 22:01:13,961 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 22:01:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:13,967 INFO L225 Difference]: With dead ends: 815 [2020-08-21 22:01:13,968 INFO L226 Difference]: Without dead ends: 627 [2020-08-21 22:01:13,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-21 22:01:13,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-21 22:01:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-21 22:01:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 22:01:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-21 22:01:14,117 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-21 22:01:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:14,118 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-21 22:01:14,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:01:14,118 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-21 22:01:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 22:01:14,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:14,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:14,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:01:14,120 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-21 22:01:14,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:14,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257066964] [2020-08-21 22:01:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,367 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:14,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:01:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:01:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:01:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:01:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:01:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 22:01:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 22:01:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:01:14,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257066964] [2020-08-21 22:01:14,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:14,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:01:14,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141368691] [2020-08-21 22:01:14,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:01:14,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:14,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:01:14,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:01:14,547 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-21 22:01:15,341 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:15,573 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:15,820 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:16,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:16,673 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-21 22:01:16,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:01:16,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-21 22:01:16,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:16,679 INFO L225 Difference]: With dead ends: 1006 [2020-08-21 22:01:16,679 INFO L226 Difference]: Without dead ends: 601 [2020-08-21 22:01:16,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:01:16,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-21 22:01:16,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-21 22:01:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 22:01:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-21 22:01:16,797 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-21 22:01:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:16,798 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-21 22:01:16,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:01:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-21 22:01:16,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 22:01:16,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:16,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:16,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:01:16,800 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:16,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:16,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-21 22:01:16,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:16,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153806847] [2020-08-21 22:01:16,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,119 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:17,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:01:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:01:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:01:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:01:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:01:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 22:01:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 22:01:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:01:17,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153806847] [2020-08-21 22:01:17,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:17,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:01:17,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988067820] [2020-08-21 22:01:17,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:01:17,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:17,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:01:17,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:01:17,350 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-21 22:01:18,119 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:18,384 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:18,619 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:19,274 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:19,499 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:01:19,771 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:20,011 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:21,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:21,061 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-21 22:01:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 22:01:21,066 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 22:01:21,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:21,070 INFO L225 Difference]: With dead ends: 1144 [2020-08-21 22:01:21,071 INFO L226 Difference]: Without dead ends: 612 [2020-08-21 22:01:21,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 22:01:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-21 22:01:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-21 22:01:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-21 22:01:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-21 22:01:21,174 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-21 22:01:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:21,175 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-21 22:01:21,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:01:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-21 22:01:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 22:01:21,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:21,177 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] [2020-08-21 22:01:21,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:01:21,178 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:21,178 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-21 22:01:21,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:21,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427571135] [2020-08-21 22:01:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,436 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:21,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:01:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:01:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:01:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:01:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 22:01:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 22:01:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 22:01:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:01:21,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427571135] [2020-08-21 22:01:21,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:01:21,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 22:01:21,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417398970] [2020-08-21 22:01:21,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:01:21,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:21,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:01:21,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:01:21,680 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-21 22:01:22,177 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:22,977 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:23,829 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:01:24,157 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:01:24,429 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:01:24,689 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:01:24,998 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:01:25,282 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:01:25,770 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-21 22:01:26,033 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:01:26,334 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:01:26,626 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 22:01:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:28,637 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-21 22:01:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:01:28,638 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 22:01:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:28,645 INFO L225 Difference]: With dead ends: 1664 [2020-08-21 22:01:28,645 INFO L226 Difference]: Without dead ends: 1125 [2020-08-21 22:01:28,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-21 22:01:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-21 22:01:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-21 22:01:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-21 22:01:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-21 22:01:28,805 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-21 22:01:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:28,806 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-21 22:01:28,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:01:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-21 22:01:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 22:01:28,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:28,809 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] [2020-08-21 22:01:28,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:01:28,809 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:28,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-21 22:01:28,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:28,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684168759] [2020-08-21 22:01:28,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,099 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:29,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:01:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:01:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:01:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:01:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:01:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 22:01:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 22:01:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 22:01:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:01:29,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684168759] [2020-08-21 22:01:29,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:29,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 22:01:29,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790664088] [2020-08-21 22:01:29,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 22:01:29,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:29,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 22:01:29,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:01:29,271 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-21 22:01:30,100 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:30,435 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:30,787 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:31,405 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:32,162 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:32,487 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:33,073 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:33,341 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:01:33,593 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:01:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:35,364 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-21 22:01:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 22:01:35,364 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-21 22:01:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:35,372 INFO L225 Difference]: With dead ends: 2205 [2020-08-21 22:01:35,372 INFO L226 Difference]: Without dead ends: 1167 [2020-08-21 22:01:35,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 22:01:35,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-21 22:01:35,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-21 22:01:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-21 22:01:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-21 22:01:35,558 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-21 22:01:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:35,559 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-21 22:01:35,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 22:01:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-21 22:01:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 22:01:35,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:35,561 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] [2020-08-21 22:01:35,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:01:35,562 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:35,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:35,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-21 22:01:35,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:35,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449222858] [2020-08-21 22:01:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,840 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:35,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:01:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:01:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:01:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:01:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:01:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 22:01:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 22:01:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:35,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 22:01:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:01:36,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449222858] [2020-08-21 22:01:36,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:36,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 22:01:36,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588521635] [2020-08-21 22:01:36,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:01:36,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:36,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:01:36,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:01:36,040 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-21 22:01:36,880 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:37,166 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:37,393 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:38,542 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:39,072 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:39,399 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:01:39,672 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:01:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:40,457 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-21 22:01:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:01:40,457 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-21 22:01:40,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:40,458 INFO L225 Difference]: With dead ends: 1688 [2020-08-21 22:01:40,458 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:01:40,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-21 22:01:40,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:01:40,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:01:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:01:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:01:40,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-21 22:01:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:40,464 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:01:40,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:01:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:01:40,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:01:40,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:01:40,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:01:41,536 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 22:01:43,909 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 22:01:44,390 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 22:01:44,725 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 22:01:45,234 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 22:01:46,264 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 22:01:47,466 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-21 22:01:47,643 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 22:01:48,135 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-21 22:01:48,312 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-21 22:01:48,590 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-21 22:01:48,784 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-21 22:01:49,945 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-21 22:01:50,151 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 22:01:50,990 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 22:01:51,298 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27